The invention provides a sewage precipitation pool, which comprises a precipitation groove, precipitate carrying equipment, a precipitate recovery chamber and a flocky precipitate catching chamber, wherein the precipitate recovery chamber is arranged at the output end of the precipitate carrying equipment; the flocky precipitate catching chamber is arranged in the precipitation groove; a sewage inlet is formed in the bottom of the precipitation groove and forms the precipitate recovery chamber with one opposite side; the flocky precipitate catching chamber is connected with a flocky precipitate recovery chamber; a plurality of rod bodies are arranged in parallel at intervals on the bottom surface of the flocky precipitate catching chamber; the middle part of the flocky precipitate catching chamber is provided with a net body; flocky precipitate catching bodies are filled between the net body and the rod bodies; a flocky precipitate catching body feeding chamber is formed at one side of the flocky precipitate catching chamber; a spiral conveyor for feeding is arranged in the flocky precipitate catching body feeding chamber; a spiral conveyor for recovery is connected with a circulation tube extending into the flocky precipitate catching body feeding chamber; a spray head and a stirring device are arranged above the circulation tube; the spray head is used for spraying clean water into the circulation tube. The sewage precipitation pool has the advantages that the occupied area is small; the cost is low.