本文首先用一种新的解析几何方法在易货经济 (即两种商品的纯交换经济 )条件下的一般均衡框架下揭示了价格与消费者的马歇尔需求之间的函数关系。在此基础上 ,由个人承担的交易成本被直接置入。然后 ,本文证明 :如果交易成本的固定项不为零 ,供、求函数将不连续 ;如果同时有非无穷小比例的人口进行同步化决策 ,那么瓦尔拉斯均衡将会被破坏 This paper first reveals the relationship between price and consumer Marshallian demand under a general equilibrium framework under the condition of a bartered economy (ie pure exchange economy of two commodities) with a new analytical geometry method. On this basis, the transaction costs borne by individuals are placed directly. Then, this paper proves that if the fixed term of the transaction cost is not zero, the function of supply and demand will be discontinuous. If there are simultaneously non-infinitesimal proportion of population to make the synchronization decision, the Walrasian equilibrium will be destroyed