This article introduces a development method of "Internet + training" collaborative simulation platform. It explains in detail how to make full use of Internet technology to bring convenience to the development of power system simulation training platform, and to solve the problem of coordination of simulation calculation. The method can effectively use the computer resources of the training system, avoid the waste of resources of the training system on the simulation computing platform, and reduce the investment in hardware equipment. Finally, this article verifies the feasibility of the development method proposed in the article through a practical case.