The invention discloses an electric cleaning brush for a disconnecting switch contact, and relates to the technical field of electric power system power transformation equipment installation and maintenance devices. The electric cleaning brush comprises a cleaning brush body and an electric drive tool, wherein a connecting shaft at the bottom of the cleaning brush body is detachably connected with a clamping part at the front end of the electric drive tool. According to the electric cleaning brush for the disconnecting switch contact, the electric drive tool is used for driving the cleaning brush body to change from rectilinear motion to rotational motion, the problem that handling is not in place due to the fact that the electric cleaning bush is limited in use during high-place operation in a narrow space can be effectively solved, production efficiency and cleaning effects can be greatly improved, operation strength can be lowered, and the electric cleaning brush is simple in structure and convenient to use.