Screw mounting tool

The utility model provides a screw mounting tool which solves the problems that in the keel mounting process, when a screw is anchored into a wall through a common hand drill, the anchoring depth of the screw is difficult to control, the anchoring force provided by the screw cannot meet the requirement due to the fact that the screw is anchored shallower, and the keel is deformed due to the fact that the screw is anchored too deep. The hand drill comprises a hand drill body, and a lengthening rod is arranged at the right end of an output shaft of the hand drill body and extends in the left-right direction. A detachable screwdriver rod head is arranged at the right end of the lengthening rod, and the screwdriver rod head and the lengthening rod are coaxially arranged. A screw in-wall depth indicating component is arranged on the lengthening rod and used for indicating the depth of the screw entering the wall. The tool can control the depth of the screw entering the wall in the construction process, operation i