For its superiority in weapon’s demonstration and application in battle, combat effectiveness evaluation for armed helicopter is studied. This paper investigated present domestic situation about the research of the combat effectiveness evaluation of armed helicopter, summarized the main study area and problems existed, and introduced the definition and factors of combat effectiveness evaluation. Then main research methods were classified, the principle were introduced, and differences of each kind were compared. The study can give proposal to the selecting of methods for the combat effectiveness evaluation of armed helicopter.