The utility model belongs to the field of chip testing, and particularly relates to a silicon-based MEMS pressure sensor chip testing tool, which comprises a cover plate and a cavity, and the cover plate is arranged right above the cavity; A sealing ring groove is formed in the upper wall of the cavity, and a plurality of second screw holes are formed in the outer edge of the sealing ring groove at equal intervals; A first screw hole is formed in a position, corresponding to the second screw hole, of the cover plate; And two aviation socket interfaces and two exhaust holes are symmetrically formed in the inner side of the first screw hole of the cover plate. According to the utility model, the effect of testing the pressure sensor chips in batches in a constant-temperature and constant-pressure environment is achieved, and the device has the advantages of simplicity, convenience, low cost, pollution prevention, flexible interfaces, easiness in expansion and the like.