Disclosed is a colonic irrigator capable of cleansing the inside of the large intestine and removing impacted feces remaining inside the large intestine by spraying a cleansing solution into the large intestine. The colonic irrigator includes a cleansing body 10 having a laid down egg shape, having a spray hole 12 formed at a lifted portion 11 provided on the upper part thereof and having a cleansing solution channel 13 formed therein to communicate with the spray hole 12, and a connector 20 which has a screw part 21 formed at one side thereof so as to be connected to a shower hose 40, is bent at 90 degrees such that the other side is connected to the lower part of the cleansing body 10, and has a cleansing solution channel 23 formed therein to communicate with the cleansing solution channel 13 of the cleansing body 10, where the cleansing body 10 and the connector 20 are integrated.