In order to meet requirement of indexes demonstration at fighter design's early stage, a mission simulation-based fighter anti-ship effectiveness evaluation method on stealth capability is researched. Evaluation indexes for the mission which can be divided into parameter indexes and mission indexes are proposed. The architecture of the simulation system which includes database, computation module, and graphic user interface (GUI) module is introduced. Deploy and setting of mission objects which include different RCS of red fighter is described. The mission scenario of the red fighters, blue fighters, and blue ships as the mission objects is set for the mission simulation. Mission logic for three kinds of mission objects is proposed. Simplified algorithm of damage judging is integrated. Shown from the process and results of the simulation, the improvement of stealth capability can effectively improve fighter anti-ship mission effectiveness but its influence is quite complex. The reasonable tactics can make better use of the advantage of the fighter's stealth capability.