Quick-changing drilling tool device

The utility model discloses a quick-change drilling tool device which comprises a lower template and an upper template, and a Morse No.4 taper hole is formed between the lower template and the upper template; a Morse No.4 taper shank is arranged on the side, away from the Morse No.4 taper hole, of one end of the outer side face of the lower die plate, a positioning rod is installed on the upper die plate, a first through hole and a second through hole are formed in the position, close to the upper die plate, of the upper surface of the lower die plate, a positioning spring is arranged in the second through hole, the positioning rod is arranged in the second through hole, and the positioning spring is connected with the positioning rod. According to the quick-change drilling tool device, the drilling tool can be assembled and disassembled at any position, it can be guaranteed that the drilling tool is concentric and firm after being installed, meanwhile, the quick-change drilling tool device has large torque,