Mechanical arm for oral care

The utility model discloses a mechanical arm for oral care, including carrier, arm body and drive component, the arm body is assembled in the carrier and is used for the space limited motion in the oral cavity of human body, the inside of the arm body is provided with the channel, the channel is used for the nursing appliance to pass through to guide the nursing appliance to the tooth position, the arm body is arranged on the carrier and comprises a first arm section adjacent to an outlet of the channel, the first arm section can swing, the driving assembly is arranged on the carrier and connected with the arm body, and the driving assembly can drive the arm body to rotate and/or translate so as to adjust the circumferential direction and/or depth of the nursing appliance. The driving assembly is connected with the arm body in a traction mode so as to drive the first arm section to swing to achieve position adjustment of the nursing appliance. The mechanical arm for oral care is good in flexibility and univer