Receiving device for agricultural non-point source pollution for use in a karst mountain country, identified by: that it consists mainly of a waste element vertically aligned with the direction of water flow (1) and a nitrogen and phosphorus absorption box (2) for the treatment of nitrogen and phosphorus in water,where the waste element (1) is a receptacle body (10),where several catchment chambers (100) are evenly aligned along the water flow direction and between two adjacent catchment chambers (100) a filter set (101) and slag catchment plates (11),which are located at the bottom of each receiving chamber (100) includes, and with an inner wall of an overhead receiving chamber (100) a water-blocking cover plate (102) is articulated and the number of masks of the respective filter sieves (101) gradually increases along the water flow direction, and the front and rear sides of the impactor plate (11) are fitted with a suspension ring (110) to connect to an external crane;and where the nitrogen and phosphorus absorption box (2) is connected to a receiving chamber (100) which is the furthest downstream.
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