The invention discloses a multifunctional clinical pharmacy infusion automatic dispensing device which comprises a storage box, a medicine bottle placer and a medicine taking device. The medicine bottle placer and the medicine taking device are arranged on the storage box, a set of medicine bottle placer is arranged on the front portion of the top face of the storage box, and the medicine bottle placer comprises a mounting box, a placement box, a moving frame, a limiting frame, a third motor, a transmission disc and a transmission frame. A controller is arranged on the upper surface of the right side of the containing box, a medicine taking device is arranged on the upper surface of the portion, on the rear side of the medicine bottle containing device, of the storage box, and the medicine taking device is composed of a horizontal moving mounting frame, a horizontal lead screw, a first motor, a moving block, a vertical moving mounting frame, a vertical lead screw, a second motor and a lifting medicine taking assembly. According to the automatic medicine dispensing device, efficient mixing is achieved while the automatic medicine dispensing function is achieved, powder medicine is fully utilized, prepared medicine bottles are temporarily stored in a bacterium breeding prevention mode, the functions are complete, and it is guaranteed that the medicine dispensing process is automatic, safe and efficient.