The invention discloses an indoor air circulation purifier, which comprises an outer cylinder, a top plate, a bottom plate and an inner cylinder. The bottom plate is provided with an air inlet, a fineparticle filtering module, a fan module and a formaldehyde adsorption module inside the inner cylinder from bottom to top in proper sequence. The wall of the outer cylinder is evenly provided with several dry exhaust through holes. The outer cylinder is also provided with a turntable inside, which is arranged between the inner cylinder and the top plate. The turntable is provided with a driving mechanism for driving the turntable to rotate, and the edge of the turntable extends out of a vertical semi-cylindrical baffle which is positioned at the periphery of the inner cylinder. The outer wallof the baffle abuts against the inner wall of the outer cylinder while in sliding fit with the inner wall of the outer cylinder. The top of the baffle abuts against the bottom of the top plate whilein sliding fit with the bottom of the top plate. The bottom of the baffle abuts the top of the bottom plate while in sliding fit with the top of the bottom plate. The indoor air circulation purifier can purify indoor air and control the air outlet direction, so that the purified air is intermittently outputted along with the circumferential direction of the outer cylinder.