Abstract: The tunneling working surface is characterized by large dust and high humidity, and coal mud is easily attached to the camera mirror when the tunneling equipment is working. In order to solve the above problems, a camera mirror cleaning device for tunneling equipment is proposed. The device uses nozzles to blow and dry the coal mud attached to the camera mirror. The rotary table drives the pneumatic motor to rotate to the center of the camera mirror, and the pneumatic motor drives the dust removal brush to rotate and clean so as to remove the coal mud. However, there are limitations in the working parameters of the dust removal brush (bristle compression relative to the camera mirror, bristle diameter and iron sheet mounting pitch). During the rotation of the rotary table, if the camera housing exerted too much force on the dust removal brush, the rotary table would not be able to rotate to the predetermined position. In order to determine the reasonable working parameters of the dust removal brush, the cleaning effect of the device under different working parameters of the dust removal brush is tested. The test results show that when the iron sheet mounting pitch is 8 mm, the bristle diameter is 0.2 mm, and the bristle compression relative to the camera mirror is 2.6-5.3 mm, the working performance of dust removal brush is the best, the coal mud removal rate is more than 90%, and the coal mud removal rate of the camera mirror center is 100%.