不当得利,系没有法律上的依据而获得利益。在实践中,由于忽视了不当得利请求权与其它请求权(如依物权所生的所有物返还请求权、基于解除权的行使而产生的原状回复请求权、因无效或经撤销的民事行为而发生的原状回复请求权,以及因侵权行为所生损害赔偿请求权等)的关系,因而出现了两种极端;一是将不当得利制度的适用范围无限扩大;二是将不当得利请求权与其它请求权对立起来,致使其适用范围过于狭小。若不理清不当得利与其他权利保护制度的关系,则必然给法律的适用带来困难。因此,有必要对不当得利制度与其它权利保护制度,尤其是侵权责任制度的关系作一研究。细观我国民法通则有关不当得利的规定,不难 Unjust enrichment, without the legal basis for the benefit. In practice, due to the neglect of unjust enrichment claims and other claims (such as property-based claims returned by the property, based on the exercise of the right to remuneration arising out of the original request, due to invalid or revoked civil Acts of the original request for the right to reply, as well as damages arising from the infringement claim, etc.), which led to two extremes; First, the unjust enrichment system unlimited expansion of the scope of the second is the unjust enrichment The right of claim is opposed to the other right of claim, making its scope of application too narrow. Disregarding the relationship between unjust enrichment and other rights protection systems inevitably brings difficulties to the application of law. Therefore, it is necessary to study the relationship between the system of unjust enrichment and other rights protection, especially the system of tort liability. It is not hard to pin down the general rules on civil unlawful profits in our country