《民法通则》第58条关于“合同是当事人之间设立、变更、终止民事关系的协议”的规定,实际上是采纳了狭义的合同概念,这一概念是科学的、合理的。统一合同法应继续采纳这一概念,而将各种反映平等主体之间以民事权利义务为内容的协议纳入统一合同法规范的对象之中。合同法作为调整交易关系的法律,是市场经济体制社会最基本的法律规则。 Article 58 of the “General Principles of Civil Law” stipulates that “the contract is an agreement establishing, altering, and terminating civil relations between the parties,” and actually adopts the narrow concept of contract. This concept is scientific and reasonable. The unified contract law should continue to adopt this concept, and include all kinds of agreements that reflect the equal rights and obligations between equal subjects in the object of the uniform contract law. Contract law as a law to adjust the transaction relationship is the most basic legal rules of the market economy system.