Longitudinal static stability flight test is a classical flight test subject. According to CCAR 25, the longitudinal static stability flight test is to verify the control force vector、force versus airspeed curve and airspeed recovery ability after control release for the conventional aircraft while for flybywire aircraft with longitudinal neutral static stability, conventional airworthiness requirements and flight test method are not applicable. Based on AC257C and special conditions of certain aircraft, the handling quality rating method (HQRM) is presented to evaluate longitudinal static stability in this paper.