PROBLEM TO BE SOLVED: To provide a circulation type automatic waterer for pets in which the water spouting in an overflow section can be prevented.SOLUTION: A circulation type automatic waterer for pets of the present invention includes: a lifting pump 4 installed in a water bowl 1 an overflow section 31 provided in an upside of the lifting pump 4 a water supply pipe 36 for connecting an outlet 45 of the lifting pump 4 to an outflow port 37 of the overflow section 31 and an inclined water channel 35 provided from the overflow section 31 to the water bowl 1. The water W in the water bowl 1 pumped up by the lifting pump 4 is made to flow to the overflow section 31 through the water supply pipe 36 and the outflow port 37, and the water W flows down through the inclined water channel 35 and returns to the water bowl 1. A baffle plate 53 for reducing force of the water circulating in the pipe 36 is disposed in the water supply pipe 36.SELECTED DRAWING: Figure 4