介绍贿赂犯罪中,行贿人为了行贿而委托中间人转交行贿款,是一种基于不法原因的给付行为,不能适用不当得利制度请求物之返还请求权。中间人将行贿人转交的行贿款私自截留的行为不构成诈骗罪,也不构成侵占罪。中间人与行贿人构成贿赂罪共犯,其侵占的行贿款是行贿犯罪的工具性赃物,应作为违法财物予以没收。 Introduce the bribery crime, the bribe entrusts the middleman to pay the bribe in order to bribe, is a kind of behavior based on the unlawful reason to pay, can not apply the unjust enrichment system request the thing return request right. Intermediaries will be handed over bribery bribes privately intercepted behavior does not constitute fraud, does not constitute embezzlement. The middleman and bribery constitute an accomplice of bribery crime. The bribe money encroached upon by them is a tool for stolen bribes and should be confiscated as illegal property.