With the continuous development of power grids in the direction of intelligence and cleanliness, the increase of flexible resources such as distributed power sources, controllable loads and energy storage in distribution grids has gradually transformed traditional distribution grids into active distribution grids. Aiming at the problem of cooperative optimization of multiple resources, this paper proposes an interactive optimal scheduling method of source-load-storage and other resources in the distribution network, in order to reduce the system network loss, and at the same time, improve the voltage quality and load fluctuation of the distribution grid and other problems. Firstly, a source-load-storage interactive optimal scheduling model was established based on the structural characteristics of distributed power sources, controllable loads, and energy storage resources, and then combined with their response strategies, costs, constraints, and other conditions. Secondly, different combinations of source, load and storage resources were analyzed with the objective functions of power supply reliability and economy of distribution network. The effectiveness of the model has been fully verified after several tests of the IEEE33 node simulation system. The model can effectively reduce the loss of distribution network and enhance the reliability of system power supply.