The invention discloses a patient limb multi-angle adjusting device for ultrasonic examination. The patient limb multi-stage adjusting device comprises a bed, a sliding rail, a slider, a frame, a turning plate, a first motor, a rotating shaft, a second motor, a screw, a first bandage, a second bandage and ultrasonic equipment. The patient limb multi-angle adjusting device is ingenious in structure, powerful in function and simple to operate; by using the device, a position, needing to be examined, of a patient is moved to a side of medical staff, and convenience is brought to the medical staff to examine the patient, so that working efficiency of the medical staff is improved effectively, and to-be-examined progress of other patients is improved.