The embodiment of the invention discloses a tooth cleaning protector. The tooth cleaning protector comprises a soft silica gel protecting body and a handheld part, wherein the soft silica gel protecting body is used for isolating an ultrasonic work point from a tooth repairing body, and the handheld part is installed at one end of the soft silica gel protecting body; the size of the soft silica gel protecting body is gradually decreased in the direction away from the handheld part so that a work point end used for being arranged on the lower edge of the gingiva of the repairing body is formedat the end, away from the handheld part, of the soft silica gel protecting body. According to the tooth cleaning protector, the soft silica gel protecting body is made of soft silica gel materials, itis only needed to hold the handhold part for a medical worker, the soft silica gel protecting body of the protector extends slowly along the oral cavity of a patient, then the medical worker holds ultrasonic tooth cleaning equipment with the other hand, the work point end is slowly put into the oral cavity of the patient for cleaning the gingiva along the outer wall of the soft silica gel protecting body, in this way, the soft silica gel protecting body is used for effectively isolating the ultrasonic work point from the tooth repairing body, the ultrasonic work point is prevented from touching sensitive natural teeth and the repairing body, and the tooth repairing body is protected.