The invention discloses a fixing device for installation and maintenance of mining equipment in the technical field of installation and maintenance. The fixing device for installation and maintenanceof the mining equipment comprises a base, wherein supports are arranged on the left side and the right side of the top of the base, a fixing support is arranged on the top of the right side support, second electric telescopic rods are uniformly arranged on the left side of the fixing support, and a round sliding block matched with a turntable is arranged on the inner wall of the outer side of thebottom of the turntable. The electric telescopic rods are arranged, so that a workbench is flexible to move and capable of adjusting different heights of objects, the workbench is provided with the turntable which can rotate at different angles of the objects, so that a person cannot run back and forth due to installation of the objects at different angles, the second electric telescopic rods canadjust the restraining force of the objects, limiting telescopic rods are arranged at the same time, a limiting effect is achieved, too much stress can be avoided, and a protection effect is achieved.