Composite ultrasonic detection device with accurate positioning function

The invention discloses a composite ultrasonic detection device with an accurate positioning function, which comprises a protective cover, a mounting seat, a positioning assembly, a detection assembly and a cleaning assembly, the mounting seat is of a symmetrical structure, two cavities are formed in the mounting seat, the internal structures of the two cavities are the same, two feet of a detector are respectively placed in one cavity, and the two feet of the detector are arranged in the cleaning assembly. The positioning assembly, the detection assembly and the cleaning assembly are installed on the side wall of an inner cavity of the installation base, and the protection cover is installed above the installation base and hinged to the installation base. According to the positioning assembly, the position of the foot of a detected person is accurately positioned through the gravity of the detected person, the fixing block component arranged on the first piston rod is vertically placed, the fixing block comp