Screwdriver with screwdriver head convenient to replace

The utility model relates to the technical field of screwdrivers, in particular to a screwdriver with a screwdriver blade convenient to replace, which comprises a screwdriver handle, a connecting rod is arranged at the top of the screwdriver handle, a mounting groove is arranged at the top of the connecting rod, through holes are arranged on the left side and the right side of the mounting groove, a fastening component is sleeved inside the mounting groove, and the fastening component is connected with the screwdriver blade. A screwdriver head is arranged on the upper side of the fastening assembly, a spring can enable a fixing block to slide in a groove through the elastic force of the spring, the diameter of the inner wall of a mounting groove is gradually increased in the clockwise direction, and a through hole is communicated with the mounting groove. The inserting rod is inserted into the mounting groove and then rotates clockwise, at the moment, the fixing block slides out of the groove and is clamped i