市场和计划是社会资源配置的两种不同方式 ,商品经济是市场和计划产生的基础。在市场经济不发达的时代 ,物权关系居主导地位 ,对财产占有的安全最受重视。随着市场交易的发达 ,财产的交换也越来越频繁和发达 ,对于交易安全的保护和规范的呼声越来越高 ,为此建立了合同制度。我 Market and planning are two different ways of allocating social resources. Commodity economy is the basis for the market and planning. In an era of underdeveloped market economy, real estate rights dominates and attaches the most importance to the security of property ownership. With the development of market transactions, the exchange of property is also becoming more frequent and developed. As the voice of the protection and regulation of transaction security is getting higher and higher, a contract system has been established for this purpose. I