To improve the performance of the SICEML (synchronous induction coil electromagnetic launcher), taking the launching speed and the power conversion ratio as the check mark, and taking the trigger sequence as the optimizing parameter, the mathematic model of Single-stage SICEML was established by using genetic algorithm. The best trigger situation was figure out. Validity of the result was confirmed by numeric and finite element analysis simulation system. In this way, a 2-stage and a 10-stage SICEML optimizing trigger sequences were approached and verified. To solve the inaccuracy problem of the emulate system, the situation and speed of armature were taken as the simultaneous qualification for switch trigger, and the effect of the activation switch′s random flutter to armature′s outlet speed was researched, and a best trigger sequence strategy is submitted.