Biomimetic swimming auxiliary device

The utility model discloses a biomimetic swimming auxiliary device. The biomimetic swimming auxiliary device comprises a shell; connecting bands are arranged at the intermediate positions of the two sides of the shell; two arm auxiliary large pulleys are respectively and symmetrically arranged on the two sides of the front end in the shell; two leg auxiliary large pulleys are respectively and symmetrically arranged on the two sides of the rear end in the shell; the arm auxiliary large pulleys are respectively hinged to an arm auxiliary frame; the leg auxiliary large pulleys are respectively hinged to a leg auxiliary frame; each arm auxiliary frame comprises an upper arm auxiliary frame, a forearm auxiliary frame and a glove; each leg auxiliary frame comprises a thigh auxiliary frame, a calf auxiliary frame and a foot strap; an arm auxiliary motor controls the arm auxiliary frames; a leg auxiliary motor controls the leg auxiliary frames; a singlechip microcomputer controls the operating of the arm auxiliary motor and the leg auxiliary motor. The biomimetic swimming auxiliary device can assist a swimming beginner in trying various correct swimming postures, so that the swimming beginner can learn to swim quickly.