In the current distribution system, the participation of solar power generation system in operation has been the main topic in the field of distribution system research. However, because of climate and other factors, it will increase the difficulty of calculation to study the 8760 hours of sunshine of solar power distribution system at least one year, so it is necessary to simplify the data. Firstly, this paper designs matlab program based on SOM clustering analysis method, which integrates solar power generation and load, and simplifies at least several cases. Then, a matlab program is designed based on the Markov key to integrate the generating capacity and load change in multi scenario, and the weight value of each scenario is calculated by Markov, so as to achieve the goal of multi scenario integration.