The invention discloses a novel pneumatic press-mounting detection tool, which comprises a face plate, a middle plate, a bottom plate, a press-mounting piece and an assembling piece, wherein the face plate and the middle plate are supported by a plurality of upper shores to form the upper frame of the tool; and the middle plate and the bottom plate are supported by a plurality of lower shores to form the lower frame of the tool. The novel pneumatic press-mounting detection tool is characterized in that the press-mounting piece is arranged on the upper frame of the tool; the face plate is provided with an upper cylinder controlled by a hand-operated valve; the piston rod of the upper cylinder is connected with the press-mounting piece by a nut; the upper cylinder is provided with a speed regulator and a voltage regulator; the press-mounting piece is provided with a speed sensor and a pressure sensor; and the assembling piece is arranged on the middle plate and is just against the press-mounting piece. The novel pneumatic press-mounting detection tool has the beneficial effect that a pneumatic system is used for driving the whole set of tool to work and move, and the novel pneumatic press-mounting detection tool is convenient to operate, saves energy, is environmentally-friendly and has a simple and reliable structure. The whole set of detection tool has high detection working efficiency and has low machining difficulty. Compared with other large detection equipment, the novel pneumatic press-mounting detection tool has low construction cost and is convenient to manufacture in batch and use.