Manual ecological sewage treatment system suitable for villages and towns

The invention discloses a manual ecological sewage treatment system suitable for villages and towns, which comprises a sewage treating pool and is characterized in that a sludge pipe is arranged at the bottom of the sewage treating pool; a water-distributing pipe is arranged above the sludge pipe; the water-distributing pipe is connected with a water inlet pipe of the sewage treating pool; a first filtering layer, a second filtering layer and a third filtering layer are successively arranged between the water-distributing pipe and the top of the sewage treating pool from bottom to top; an aerator pipe is arranged in the second filtering layer; the other end of the aerator pipe extends out of the sewage treating pool and is connected with a fan; a draining tank is arranged around a peripheral wall of the sewage treating pool; the draining tank is communicated with the water inlet pipe of the sewage treating pool through a return pipe; and a drain pipe is arranged on the draining tank. Compared with a present e