根据《合同法》第二十一条的规定,承诺是指受要约人同意要约的意思表示。因此,承诺书是指受要约人同意邀约的意思表示并以书面形式表达出来的文书。然而对于承诺书的法律性质问题,针对不同的行业,学界有多种观点。本文以高校学生签署的奖学金平分承诺书为切入点,分析此种承诺书的性质,从而为其他行业承诺书性质的探讨提供思考和借鉴。 According to Article 21 of the Contract Law, a promise means the expression of the consent of the offeree to the offer. Therefore, the promissory note refers to the agreement expressed by the offeror and expressed in writing. However, for the legal nature of the undertaking, there are many views on the different industries for the academic community. In this paper, scholarship signed by college students shares the promise as the starting point, analyzes the nature of such undertaking, so as to provide a reference for the exploration of the nature of undertakings in other industries.