The invention discloses purification equipment and two-chamber type gas stripping equipment thereof. The two-chamber type gas stripping equipment comprises an aeration device, a first partition wall and a second partition wall which are arranged in a biological pool, a lifting chamber is formed between the first partition wall and the second partition wall, and the aeration device extends into thelifting chamber; a third partition wall is arranged in the biological pool and located on the side, away from the first partition wall, of the second partition wall, and an air release chamber is formed between the third partition wall and the second partition wall; the bottom of the second partition wall is not in contact with the bottom surface of the biological pool, so that sludge flows intothe lifting chamber from the gas release chamber after the gas release chamber is communicated with the lifting chamber. The two-chamber type gas stripping equipment is additionally provided with thethird partition wall and the gas release chamber, the energy-saving effect is achieved, the technical problem of sludge concentration differential gradient control between functional areas communicated with the gas stripping equipment and required by daily engineering operation conditions can be solved, a gas diffusion device in the prior art is omitted, maintenance and repair are reduced, and thecost is effectively saved.