The invention discloses a semi-automatic drilling machine which comprises a workbench, a feeding mechanism, a positioning and clamping mechanism, a drilling mechanism, a finished product pushing mechanism and a transmission mechanism. A feeding station and a drilling station are arranged on the workbench. The feeding mechanism is used for pushing workpiece workblanks on the workbench to a designated position from the feeding station. The positioning and clamping mechanism is used for pushing the workpiece workblanks, pushed to the designated position through the feeding mechanism, into a circular groove and used for fixing the workpieces. The drilling mechanism is used for drilling the workpiece workblanks which are pushed to the drilling station and already clamped tightly. The finished product pushing mechanism is used for pushing the drilled workpieces at the drilling station out of the circular groove. The transmission mechanism is in transmission connection with the feeding mechanism, the positioning and clamping mechanism, the drilling mechanism and the finished product pushing mechanism, so that the transmission mechanism transmits power to the feeding mechanism, the positioning and clamping mechanism, the drilling mechanism and the finished product pushing mechanism. The semi-automatic drilling machine integrates the functions of feeding, positioning, clamping, drilling, pushing and the like, and the problems that an existing drilling machine is high in work force, and low in efficiency are solved.