Aiming at the limitation of existing air combat threat assessment models with only fighters combat, referring to the multi-attribute assessment method, a threat assessment for multi-types airplane method based on combat power field theory is presented. The model divides the target threat into single and regional threats. To overcome the traditional methods’ shortcoming of state imbalance by constant weight, the model uses the variable weight mechanism. The fuzzy theory is used to complete the missing information. By defining the arriving border time and potential threat, airplanes’ threat is described roundly. Simulation result gives credit to the model. The result of research shows that the proposed method can assess different kinds of airplanes’ threat roundly and bring the basis to maneuvering decision.