The utility model belongs to the technical field of the waterborne operation technique and specifically relates to a novel arrange mud steel pipe flotation pontoon is related to, including body and backup pad, the body include flotation pontoon I and flotation pontoon II, flotation pontoon I and flotation pontoon II insidely be sealed hollow structure and be equipped with two parallel backup pads along radial direction, flotation pontoon I and flotation pontoon II are connected respectively to the backup pad both ends, are equipped with the recess in the middle part of the backup pad for the row's of placing mud steel pipe, backup pad lower surface laminating keep watertight nature to be equipped with steel bottom plate, flotation pontoon I and flotation pontoon II's surperficial radius of circle be 0.8m, the tube length is 2.35m, flotation pontoon I and flotation pontoon II's the centre of a circle is apart from being 2.6m. According to the relevant laws and regulation regulation of ministry of communications, car goods always width exceedes 2.5m, highly exceedes 4m, belongs to the transportation of transfiniting, thus process design and calculation, the utility model provides a not only satisfy the limit for width limit for height requirement of ministry of communications but also satisfy row flotation pontoon that the superficial support of mud steel pipe required.