The invention provides a workflow engine-based multi-time scale active distribution network interactive simulation method. The method includes determining an initial section of an active distribution network simulation model; determining influence factors of the active distribution network interactive simulation; modeling functional unit simulation business; creating a simulation workflow template; controlling workflow simulation; subjecting a simulation control result to visual display. According to the arrangement, the workflow engine technique is adopted to overcome the defects that the traditional grid load flow analysis software fails to control time series flow, and interaction between the contingency process and the flow lacks, and accordingly stability, maintenance simplicity and elasticity control of business process are achieved.