The utility model provides a sensor protection box, this sensor protection box include box body, the installation body, connecting piece and electrostatic shield layer. Wherein, the box body has the opening face, and the electrostatic shield layer sets up the surface at the box body. The installation body sets up the opening face department at the box body, and the connecting piece is used for with installation body fixed mounting at the carrier. During the use, detain the box body on the sensor, will install the body through the connecting piece and fix on the carrier of sensor department. Owing to be provided with the electrostatic shield layer on the box body, electromagnetic radiation that space beyond the box body produced just can not pass to to the box body in, has just so avoided the influence to the sensor of external electromagnetic radiation. The sensor just can accurate, effectual structural change of monitoring in the electric power tunnel.