Efficient detection device for underwater state of bridge pier

The invention provides a pier underwater state efficient detection device which comprises a floating plate, the floating plate comprises a middle floating plate and side floating plates, the two ends of the inner wall of a middle connecting plate are vertically connected with the side floating plates, and the middle connecting plate is connected with the two side floating plates to form a U shape; a first clamping assembly is installed in the middle of the surface of the middle connecting plate, a middle traction assembly is installed in the middle of the surface of each side floating plate, an outward turning assembly is installed at the outer end of the surface of each side floating plate, and a second clamping assembly is assembled and connected to each outward turning assembly; the floating plate and the detection ship are in parallel soft-hard alternate connection. The walking track can be used as an underwater walking guide structure of the detection host, so that the walking track can accurately detect