The invention discloses a pond bottom mud collector which comprises a collection pipe, a mud suction pipe, a bearing block, a mud suction inlet, a first connecting base, a second connecting base, a mud suction assembly, a splicing assembly, a ventilation pipe, a first leakage blocking bolt, a drainage pipe, a second leakage blocking bolt, a sealing gasket and a bearing. The mud suction pipe is fixedly welded to the outer wall of the bottom end of the collection pipe, a mud suction inlet is formed in the outer wall of the bottom end of one side of the mud suction pipe, and the ventilation pipeis in through connection with the outer wall of one side of the top end of the collection pipe; the bottom mud collector is simple in integrated structure, small in size, and convenient to operate anduse, has the good collecting performance and can save time and labor; by arranging the splicing assembly, pond bottom mud can be conveniently collected, no disturbance is caused to bottom mud in thecollecting process, bottom mud can be collected in a layered mode, and a specific water layer can also be collected.