摘要： 民事法律中的不法原因给付制度旨在对不法给付行为进行一般预防。受终局性标准的限制，不法原因给付不同于不法原因委托。在处理涉及不法原因给付或委托的财产犯罪案件时，需依据不法原因给付和委托的民事法律后果谨慎判断行为人是否出于“非法”占有目的侵犯了他人“财产”。不法取得的无权占有以及用于不法目的的财物仍然是刑法意义上的财产，不法劳务与民法上无效的请求权则不属于财产犯罪保护的对象。在认定“非法”占有目的时，需着重考察行为人意图创设的财产状态是否符合不法原因给付制度确立的财产归属原则。

关键词: 不法原因给付, 不法原因委托, 法律经济财产说, 非法占有目的

Abstract: n civil law, the rule of payment of unlawful cause is aimed at preventing unlawful payment generally.Limited by the standard of finality, the concept of payment of unlawful cause is different from that of trust of unlawful cause.When dealing with property crimes involving payment or trust of unlawful cause, a prudent judgment should be based on the civil legal consequences of payment or trust of unlawful cause, in order to determine whether the perpetrator acts out of the intent of “illegal” possession and whether the perpetrator acting out of that intent infringes others person's“property”.While unentitled possession and property intended for unlawful purpose remain within the concept of property in criminal law sense, illegal labor and invalid right of civil claims are not within the protection of property crime legislation.When determining the intent of “illegal” possession, it is necessary to focus on whether the state of the property the perpetrator intended to achieve is in line with the principle of property ascription established on the rule of payment of unlawful cause.

Key words: Payment of Unlawful Cause, Trust of Unlawful Cause, Legal economic Assets Theory, Intent of Illegal Possession