It is usually difficult to evaluate the capability of an overhaul production line of an aviation overhaul depot.We put forward a method for capability assessment of military aircraft overhaul production.The process and key points of aircraft overhaul production are analyzed,and an index system for capability assessment is built up based on the characteristics of aircraft overhaul production.The evaluation index weighting model is constructed based on entropy weight and grey cluster by using the theory of information entropy and grey system.The applicability and validity of the method is verified by an actual example.