Nailing auxiliary device

The invention discloses a nailing auxiliary device. The nailing auxiliary device comprises a bottom plate. Rotating support pieces are symmetrically arranged in front of and behind the middle of the top of the bottom plate. A support plate is rotationally arranged between the two rotating support pieces in a matched mode. The rotating support pieces are movably connected with the support plate through a bolt. Angle scales are arranged on the outer side surface of each rotating support piece. A telescopic locking pin is arranged in the position, located between the angle scales and the bolt, of the outer side surfaces of the rotating support pieces. Scale pointers are arranged on the front end surface and the back end surface of the support plate. A pulling ring is arranged at the top end of the support plate. Semicircular grooves are further formed in the front end surface and the back end surface of the support plate. The nailing auxiliary device is simple in structure, low in cost, convenient and fast to us