Rat repelling device for sewer

The utility model discloses a sewer rat repelling device which comprises a rat repelling base, the top of the rat repelling base is provided with a rat repelling mechanism, the rat repelling mechanism comprises a rat repelling ring, the inner wall of the rat repelling ring is fixedly provided with a support plate, the inner wall of the support plate is fixedly provided with a bearing seat, and the bearing seat is fixedly provided with a rotating shaft. A movable rod is arranged in the bearing seat through a bearing, the movable rod can move in the bearing seat, and a transmission circular shaft is fixedly arranged at one end of the movable rod. When the device is used, the whole device is placed in a sewer, so that the water level in the sewer can be observed through the water level measuring column, the bottom of the raticide box is higher than the surface of the water level of the sewer, and the raticide box can also be used in water; the transmission shaft drives the rodent repellent box to rotate, so that