The invention discloses a dental curette storage device for easy replacement of joints, which comprises a main shell, a semi-closed plate, a storage box, an electric push rod, a first connecting horizontal bar, a second connecting horizontal bar, a connecting vertical bar, a third Connecting bar, bracket, dynamic fixed block, static fixed block, dental curette joint, screwing groove, fixed frame, telescopic rod, drive shell, indexing motor, nut, dental curette main rod, hexagonal column, screw Joint stud, electric push rod control button and indexing motor control button. The present invention has a reasonable structural design. The dental curette is divided into a dental curette joint and a dental curette main rod. By replacing the dental curette joint on the dental curette main rod, different models and types of dental curettes can be obtained without preparation. A variety of dental curettes reduce the cost of dental care, and the replacement of the dental curette joints is realized by using the dental curette main rod installation mechanism and the dental curette joint fixing mechanism, which is convenient and quick, and provides convenience for dental medical staff.