China is characterized by uneven distribution of resources and regional economic development. It is necessary to strengthen inter-provincial electricity market construction, break inter-provincial barriers, and promote the optimization of the distribution of electricity resources in a larger area. The inter-provincial market is to promote the optimal allocation of electricity resources on a larger scale in each province and to promote the flow of electricity resources from electricity-rich areas to electricity-scarce areas. Therefore, this paper firstly analyzes the significance of the inter-provincial electricity spot convergence mechanism to play the role of the inter-provincial market in optimizing the allocation of resources on a large scale, and then constructs a model of inter-provincial and intra-provincial spot market transactions, analyzes the convergence mode of the two levels of market transactions under the convergence mechanism, and finally puts forward an outlook on the construction direction of China's future inter-provincial renewable energy market transaction mechanism.