Water body filtering device

The utility model discloses a water body filtering device which comprises a filtering treatment box and a liquid inlet filtering mechanism, the two opposite sides of the filtering treatment box are provided with a liquid inlet and a liquid outlet respectively, the liquid inlet filtering mechanism comprises a mounting sleeve and a liquid inlet filtering net arranged in the mounting sleeve, and one end of the mounting sleeve is provided with a connecting sleeve; the liquid inlet of the filtering treatment box is sleeved with the connecting sleeve, a radial locking assembly is arranged on the peripheral side of the connecting sleeve and comprises a radial locking rod and an elastic piece, the radial locking rod is arranged on the connecting sleeve in a sliding mode, the elastic piece is arranged between the radial locking rod and the connecting sleeve, and a locking hole is formed in the position, corresponding to the radial locking rod, of the outer wall of the liquid inlet; and the radial lock rod is inserted