The utility model relates to the technical field of auxiliary positioning templates, and discloses a clothing button sewing auxiliary positioning template which comprises a cross rod, a first connecting rod and a second connecting rod, a positioning plate is fixedly installed on the right side of the cross rod, scale marks are arranged on the top of the positioning plate, a positioning rectangular hole is formed in the positioning plate, and a positioning hole is formed in the right side of the cross rod. A hand-screwing screw rod slidably penetrates through the first head end connecting rod and the second head end connecting rod, a clamping plate is fixedly installed outside the hand-screwing screw rod, a limiting plate is fixedly installed at the bottom of the hand-screwing screw rod, and a hand-screwing threaded piece is fixedly installed outside the hand-screwing screw rod. According to the auxiliary positioning template for garment button sewing, the clamping plate and the hand-screwed threaded piece can be close to each other by screwing and locking between the hand-screwed screw rod and the hand-screwed threaded piece, so that the clamping plate and the hand-screwed threaded piece are prevented from rotating, rotation of all the first connecting rods and the second connecting rods is limited, and when the garment buttons are sewn and positioned, the clamping plate and the hand-screwed threaded piece are not prone to falling off. Deformation of the positioner due to any external conditions is avoided, and displacement and deflection of the positioner are avoided.