The utility model discloses a be used for prosthetic multi -functional crossbeam of jacket, it is including the crossbeam main part that is used for connecting catheters frame both sides to and setting up a pair of pitching pile at these crossbeam main part both ends respectively, every pitching pile inserts in the jacket spud leg correspondingly. This crossbeam main part including the pavement crossbeam of the jacket both sides that are used for shuttling back and forth fast, be used for supplying the landing stage platform of operating personnel jacket about quick, this landing stage platform is located the middle part of this pavement crossbeam. In the technical scheme provide by the utility model, this be used for prosthetic multi -functional crossbeam of jacket's simple structure, convenient to use can prefabricate on whole land, and marine one -time Setup takes one's place for the repair economy more of jacket spud leg is high -efficient, safe practical.