With the landing practice of electricity spot market, carbon emission allowances of distribution network and electricity spot prices will become factors that cannot be ignored in the Dispatching operation of the distribution network. dispatchable resources such as electric source, storage, and load, gradually become more and more abundant. Firstly, the model of“source-network-load-storage”on the distribution network side are proposed in the spot market environment, and at the same time, the paper conduct carbon emission benefit modeling for various power sources. Then power purchase benefits and carbon emission benefit optimization optimization scheduling model with multi- objective of power purchase cost and carbon emission benefit is established by considering the impact of the carbon trading price and regional quota limit. The effectiveness of the model is proved by using the pattern search algorithm to optimize the solution based on actual data. Finally, influence of the“source, load, storage”scale ratio,carbon emissions trading prices, the price of Chinese certified emission reduction and carbon allowances on dispatch operations is analyzed.