The invention relates to a settling pond, and belongs to the technical field of environment engineering. The two sides of the bottom of the settling pond sink and are recessed towards the middle, and the bottom of the settling pond is overall inclined towards one side. The settling pond is made from concrete, and ceramic is attached to the inner surface of the settling pond. An anti-wave grid is arranged in the middle of the settling pond. A water inlet is formed in one side of the settling pond, and a water outlet is formed in the other side of the settling pond. A mud discharge ditch is manufactured in the bottom of the settling pond. According to the settling pond, the inner surface made from the ceramic is adopted as a foundation, a polytetrafluoroethylene coating is additionally arranged, sediment can be effectively prevented from being attached to the inner surface of the pond, collection is easy, and meanwhile the settling pond is easier to clean. The anti-wave grid is arranged in the middle of the pond, the water inlet and the water outlet are formed in the two ends separately, thus, during water intake, only water on the water inlet side is stirred, the water outlet side is kept calm, and precipitating time is shortened. Sludge is deposited in the long ditch in the bottom, and dredging is convenient.