The short answer

  • A gambling debt is an illegal debt, and the law does not protect it. The loser may refuse to pay; if the winner sues on an IOU, the court will hear the case on the true underlying legal relationship and hold the loan contract void (Civil Code Article 153; Articles 13 and 14 of the judicial interpretation on private lending, 民间借贷司法解释). The precondition is that it can be established by evidence that the money came from gambling — a court will not go merely by the word “loan” written on the note.
  • Not every mahjong game played for money is gambling. The judicial interpretation expressly states that entertainment activities that are not for the purpose of profit and involve only small amounts of property at stake are “not treated as gambling (不以赌博论处)” (Fa Shi [2005] No. 3, Article 9). What matters is the purpose, the relationship between the players, the amount and the way the game is played — not whether there is money on the table.
  • The line is drawn at “organising” and “profit”: where a person organises gambling for three or more people and the rake-off profits total RMB 5,000 or more, or the gambling funds total RMB 50,000 or more, or the number of participants reaches 20 or more, the organiser may commit the crime of gambling (赌博罪), punishable by up to three years’ imprisonment (Criminal Law Article 303, paragraph 1; Fa Shi [2005] No. 3, Article 1).
  • For mere participation, where the gambling funds are relatively large, a public security penalty usually applies: Article 82 of the Public Security Administration Punishments Law, in force from 1 January 2026, provides for detention of up to five days or a fine of up to RMB 1,000; where the circumstances are serious, detention of not less than ten and not more than fifteen days, together with a fine of not less than RMB 1,000 and not more than RMB 5,000. Gambling funds and gambling instruments are confiscated in every case (Article 11).
  • A creditor who takes matters into his own hands is also breaking the law: collecting an illegal debt such as a gambling debt by violence, coercion or similar means may, where the circumstances are serious, constitute the crime of collecting an illegal debt (催收非法债务罪) (Criminal Law Article 293-1, added by the 2021 Amendment (XI) to the Criminal Law; up to three years’ imprisonment).
  • Owners of card rooms and mahjong parlours need to be especially careful: charging only normal venue and service fees is not treated as gambling; once they take a rake-off, lend money to losers, or settle accounts for gamblers, the nature of the place changes from an “entertainment venue” to a “gambling venue” (Fa Shi [2005] No. 3, Articles 9 and 4).

You Lost Money at Mahjong — Can You Just Get Up and Leave?

This is the question we are asked most often. The answer: a gambling debt is not protected by law, so if you refuse to pay, the other side will find it very hard to obtain it through litigation; money already paid over generally cannot be recovered, and may be confiscated as gambling funds (Public Security Administration Punishments Law, Article 11). The reasoning has three layers:

  • Gambling is unlawful conduct, so the “debt” itself never arises. Civil Code Article 153: a civil juristic act that violates a mandatory provision of a law or an administrative regulation is void; a civil juristic act that offends public order and good morals is void.
  • Writing it up as an IOU makes no difference. Article 13 of the judicial interpretation on private lending lists the situations in which a loan contract is void, including item (5), “violating a mandatory provision of a law or administrative regulation”, and item (6), “offending public order and good morals”. An IOU written on the basis of a gambling debt falls squarely within those two items.
  • A court will lift the wording and look at what relationship actually lies underneath. Article 14 of the same judicial interpretation provides that where the defendant raises a defence based on the underlying legal relationship and proves that the dispute over the claim does not arise from private lending, the court shall hear the case on the facts it has established and in accordance with the underlying legal relationship.

But “not protected” does not mean “safe to gamble”. If the loser does not pay the gambling debt, the creditor gets no support from the law; the gambler still faces the risk of a public security penalty, and the gambling funds will be confiscated.

Does Playing Mahjong with Relatives and Friends for Small Stakes Count as Gambling?

The judicial interpretation answers this question directly. Article 9 of Fa Shi [2005] No. 3 reads (excerpt): “Entertainment activities that are not for the purpose of profit and involve only small amounts of property at stake, and business activities such as providing card rooms and other entertainment venues that charge only normal venue and service fees, are not treated as gambling (不以赌博论处).” Three factors are used to judge it:

  • Purpose: whether it is for the purpose of profit. Relatives and friends amusing themselves are not; organising other people to take part and taking a cut or table fees as the main source of income is.
  • Relationship and setting: entertainment with stakes among relatives or acquaintances is different in nature from being pulled into a game with strangers and losing money.
  • Amount: the provision says only “small amounts of property” and sets no nationwide figure. Local public security organs apply different discretion standards, and many places draw the line at a few hundred yuan — this is practice guidance, not the text of the law (my own summary).

One claim circulating in the source material is that games played purely to compare wins and losses, such as Zha Jin Hua or Dou Niu, count as gambling whatever the amount. I was not able to verify a clear statutory basis for this — in law the requirements remain “for the purpose of profit” and “relatively large gambling funds”; it is simply that such games have none of the appearance of entertainment, so the likelihood of their being characterised as gambling is markedly higher (my own summary, not a concluded view).

When Does a Fine or Detention Escalate into Prison?

Criminal Law Article 303, paragraph 1 (excerpt): “Whoever, for the purpose of profit, gathers people to gamble or takes gambling as his occupation is to be sentenced to not more than three years’ fixed-term imprisonment, criminal detention or control, and a fine.” Article 1 of Fa Shi [2005] No. 3 sets out four criteria for what counts as “gathering people to gamble”; meeting any one of them is enough:

  • Organising gambling for three or more people, with rake-off profits totalling RMB 5,000 or more;
  • Organising gambling for three or more people, with gambling funds totalling RMB 50,000 or more;
  • Organising gambling for three or more people, with the cumulative number of participants reaching 20 or more;
  • Organising ten or more Chinese citizens to gamble abroad, and taking rebates or introduction fees from it.

Article 2 of the same interpretation classifies “setting up a gambling website on a computer network, or acting as an agent for a gambling website and accepting bets” as running a gambling establishment (开设赌场罪); Article 4 provides that a person who, knowing that another is carrying out criminal gambling activity, provides direct assistance such as funds, computer networks, communications or settlement of expenses is to be punished as an accomplice in the crime of gambling. Running a gambling establishment carries a heavier sentence: not more than five years’ fixed-term imprisonment, criminal detention or control, and a fine; where the circumstances are serious, not less than five and not more than ten years’ fixed-term imprisonment, and a fine (Criminal Law Article 303, paragraph 2).

The Zhou Mouquan et al. gambling case in the People’s Courts Case Database (database entry no. 2024-05-1-285-001) shows how this is applied: several defendants bought the results information of Hong Kong’s “Mark Six” lottery and organised other people to bet on the numbers, running 33 rounds in total, with gambling funds of more than RMB 680,000 and profits of more than RMB 50,000. The court held that “using a particular form as a vehicle and staking property on a contest of win or lose constitutes gambling”, and sentenced them for the crime of gambling to fixed-term imprisonment ranging from one year and six months down to eight months, together with fines. What matters is not the form used, but whether it is for the purpose of profit and whether others are organised to stake property on a contest of win or lose.

Where Is the Risk for Owners of Card Rooms and Mahjong Parlours?

A card room is not in itself unlawful. Article 9 of Fa Shi [2005] No. 3 makes clear that business activity that charges only normal venue and service fees and is not for the purpose of profit is not treated as gambling. But several things can turn lawful business into criminal risk: taking a rake-off on each game; lending money to losers at daily interest; exchanging chips for gamblers or settling accounts on their behalf; charging introduction fees per head to bring people in; and tipping gamblers off. The first four may fall within gathering people to gamble, running a gambling establishment, or being an accomplice; the last is directly punishable under Article 87 of the Public Security Administration Punishments Law (giving a tip-off, or otherwise providing conditions, while a public security organ is investigating drug use, gambling, prostitution or soliciting prostitutes is punishable by detention of not less than ten and not more than fifteen days; where the circumstances are relatively minor, detention of up to five days or a fine of not less than RMB 1,000 and not more than RMB 2,000).

What Can You Do When a Gambling Debt Is Being Pressed and the Creditor Turns Violent?

You do not have to repay a gambling debt, but the person collecting it will not necessarily use legal channels. Collecting an illegal debt such as a gambling debt by violence or coercion, or by restricting another person’s personal liberty, entering another person’s home, or intimidating, following and harassing another person, may where the circumstances are serious constitute the crime of collecting an illegal debt (Criminal Law Article 293-1). If this happens, these are the things you can do:

  • Call the police: violent debt collection is a public security and potentially criminal matter, not a civil dispute that “goes away once you pay”.
  • Preserve the evidence: the other side’s collection chat records, call recordings, video of visits to your home, transfer receipts and the original IOU should all be secured before any negotiation.
  • Do not rewrite documents under pressure: describing the gambling debt as a “loan”, adding a fresh IOU, or adding interest only gives the other side one more piece of evidence against you.
  • Do not settle the debt with a house or a car: security given for a gambling debt is equally unprotected, and once mortgage or transfer documents are signed, undoing them afterwards is very difficult.
  • If you are sued, the direction of your defence: argue that the underlying legal relationship is gambling and ask the court to hear the case on the true relationship and hold the contract void (judicial interpretation on private lending, Articles 14 and 13).
  • Be clear about your own position too: if you are one of the gamblers, then besides being able to refuse to pay the gambling debt, you may yourself face a penalty under Article 82 of the Public Security Administration Punishments Law, and the gambling funds will be confiscated.

Limitations to Note

There is no nationwide monetary threshold for “small amounts of property” or for “relatively large gambling funds”; the discretion standards of local public security organs and the findings of courts in individual cases are not uniform. This article sets out the provisions and the prevailing approach in adjudication only, and cannot replace an assessment of a particular case; nor was I able to verify a statutory basis for claims such as “Zha Jin Hua and Dou Niu always count as gambling”, which are marked above as my own summary. How any individual case proceeds depends on local practice and on the evidence in your hands.

If you or a family member are being investigated or sued over gambling, a gambling debt, running a card room, or a debt-collection dispute, you are welcome to contact Wang Xin: phone 186-0113-9509, WeChat wang223040.

Quick answers

Can I refuse to pay a gambling debt in China?
Yes. A gambling debt is an illegal debt that the law does not protect: the loser may refuse to pay, and a creditor suing on an IOU will find it very hard to recover the money through litigation. The court hears the case on the true underlying legal relationship and holds the loan contract void, and money already paid over generally cannot be recovered — it may be confiscated as gambling funds.
Does playing mahjong with relatives and friends for small stakes count as gambling?
No. The judicial interpretation provides that entertainment activities that are not for the purpose of profit and involve only small amounts of property at stake are “not treated as gambling (不以赌博论处)”. What decides it is the purpose, the relationship between the players, the amount and the way the game is played — not whether money is on the table. There is no nationwide figure for “small amounts”; local standards differ.
When does gambling escalate from a fine or detention to the crime of gambling?
Where a person organises gambling for three or more people and the rake-off profits total RMB 5,000 or more, the gambling funds total RMB 50,000 or more, or the number of participants reaches 20 or more — or organises ten or more Chinese citizens to gamble abroad and takes rebates or introduction fees — the organiser may commit the crime of gambling (赌博罪), punishable by up to three years’ imprisonment. Mere participation with relatively large gambling funds normally attracts a public security penalty instead.

This is an English edition of Wang Xin’s original Chinese article, 打麻将输了钱，能不能起身就走？赌债、亲友娱乐和赌博罪的那条线. It explains the law of the People’s Republic of China in general terms and is not legal advice for any particular case; outcomes depend on the specific facts and on how local authorities apply the rules.