A mine underground sump structure convenient to clean belongs to the technical field of mine mining area drainage facilities and is used for mine underground drainage. The technical scheme is as follows: the device comprises a base, the plurality of mud separating baffles are perpendicular to the length direction of the water bin; the multiple mud separating baffles are detachably connected with the side walls of the two sides of the water bin roadway; The distance between the adjacent mud separation baffles is 70-100 meters, the height of the mud separation baffles is lower than the lowest water line of water drainage of the water bin, water drainage holes are formed in the bottoms of the mud separation baffles respectively and communicated with the water bin on the two sides of the mud separation baffles, and the U-turn chamber is located in the middle of the water bin. Sludge in the water sump can be precipitated step by step from front to back, segmented cleaning is carried out according to the desilting amount of each segment during cleaning, the U-turn chamber can meet the U-turn requirements of shovel loading equipment and transportation equipment, long-distance reversing operation is avoided, and the safety coefficient is increased. According to the utility model, silt in the water sump can be simply and easily cleaned, the cleaning time is reduced to 50% of the original cleaning time, and the labor intensity of workers is reduced.