Manual nailing gun with protection function

The manual nailing gun with the protection function comprises an adjusting piece, a machine frame, a protection sleeve, a pressing piece and a U-shaped nail groove, the machine frame is arranged on the side of the adjusting piece, the pressing piece is arranged at the top of the machine frame, the protection sleeve is arranged at the bottom end of the adjusting piece, the U-shaped nail groove is formed in the bottom of the machine frame, and the U-shaped nail groove is arranged in the U-shaped nail groove. The protective sleeve comprises a protective frame, a groove and a torsional spring, the groove is formed in the middle of the protective frame, and the torsional spring is arranged at the top of the protective frame. According to the manual nailing gun with the protection function, a worker opens a U-shaped nail groove to place a nail, then grabs a handle frame with fingers, grabs a frame to press a gun nozzle downwards, so that a protection frame rotates along the track of a torsional spring, then a palm