In order to meet the needs of maintainability evaluation of radar equipment in the evaluation and finalization stages,the maintainability evaluation index system of radar equipment is constructed.An improved analytic hierarchy process (AHP) method is put forward to weight the maintainability evaluation index of radar equipment. The Grey-AHP model for radar equipment maintainability evaluation is established,and the maintainabilities of three different development schemes are sorted to verify the effectiveness and feasibility of this method.