The invention discloses a large-scale block floating bracket mounted surging fender device. The large-scale block floating bracket mounted surging fender device comprises a supporting base, a door sub-frame, a positioning beam, a support and an elastic unit, wherein the supporting base is fixed on the sides of a barge at two sides; the supporting base is pivoted with the positioning beam; the door sub-frame is vertically fixed on the side outside the supporting base and transversely spans the upper end of the positioning beam; the support is fixed on the barge; one end of the elastic unit is fixed on the support while the other end of the elastic unit is fixed with the positioning beam; and through the connection above, a surging fender main body structure is formed. As the barge can be helped to be at the right position according to the lengthways preset design during the process of entering into a guide pipe frame surrounding groove, the large-scale block floating bracket mounted surging fender device, disclosed by the invention, has the advantages of efficiently solving the lengthways position occupation precision problem of the blocks when the large-scale block floating brackets are butted, avoiding front-and-back movement between the barge and the guide pipe frame, providing guarantees for the centering of insertion tip and a pile leg coupling buffering device of the block, and improving economic benefits as the large-scale block floating bracket mounted surging fender device can be detached and utilized repeatedly.