Waterproof magnetotelluric exploration instrument

The utility model relates to the technical field of electromagnetic prospecting instruments, in particular to a waterproof magnetotelluric prospecting instrument which comprises a machine shell, a protective cover is hinged to the top end of the machine shell, the front end of the protective cover is detachably connected to the front side of the top end of the machine shell in a locking mode through a lock catch, a fixing frame is arranged in an inner cavity of the machine shell, and a fixing plate is placed at the top end of the fixing frame. An exploration instrument is arranged at the top end of the fixing plate, a fixing groove is formed in the bottom end of the fixing plate, fixing holes are formed in the left side and the right side of an inner cavity of the fixing groove respectively, fixing rods are detachably inserted into inner cavities of the two fixing holes, and sliding rods are arranged on the sides, close to each other, of the two fixing rods. According to the waterproof magnetotelluric explora