The utility model belongs to the technical field of the construction of desilting under water, concretely relates to mud equipment is inhaled to water sword that applies to knotts clay body structure. The utility model discloses a solve the ordinary problem of inhaling the mud inefficiency of inhaling mud equipment, provide a mud equipment is inhaled to water sword that applies to knotts clay body structure, including the mud pipe, the hypomere periphery of mud pipe is equipped with water pressure system and pneumatic circuit, water pressure system bottom is equipped with the water under high pressure export, the export of calming the anger of the height with the inside intercommunication of mud pipe that atmospheric pressure system configuration has a tilt up, the upper and lower both ends of mud pipe are open structure. The utility model discloses at first cutting the knotts clay body structure through the water pressure system and becoming to be suitable for exhaust fragment or mud, reached the purpose of destroying the knotts clay body structure, the rethread pneumatic circuit is taken fragment or mud out through the mud pipe, more pointed to the riverbed geology of clay nature, can also also can clear up the discharge with the iron -manganese concretions who mix with in the argillic horizon, has improved and has inhaled mud efficiency, the simultaneous control construction cost.