The embodiment of the utility model discloses a tooth cleaning protector. Wherein the soft silica gel protection body is used for isolating an ultrasonic working tip from a dental restoration body, the handheld part is installed at one end of the soft silica gel protection body, and the sizes of the soft silica gel protection body are sequentially decreased in the direction away from the handheldpart, so that the working tip used for being placed into the lower edge of the gingiva of the restoration body is formed at the end, away from the handheld part, of the soft silica gel protection body. According to the tooth cleaning protector disclosed by the utility model, the soft silica gel protection body is made of the soft silica gel material; a medical worker only needs to hold the handheld piece by one hand; a soft silica gel protection body of the protector slowly extends into the oral cavity of the patient; the ultrasonic tooth cleaning equipment is held by the other hand of the medical personnel; the working tip is slowly placed into the oral cavity of a patient along the outer wall of the soft silica gel protection body to clean gingiva, so that the soft silica gel protectionbody is used for effectively isolating the ultrasonic working tip from the dental restoration body, the ultrasonic working tip is prevented from touching sensitive natural teeth and the restoration body, and the dental restoration body is protected.