The invention provides an integrated rubber sheath for a heavy haul railway. The integrated rubber sheath is prepared from, by weight, 100 parts of SBR, 5-10 parts of ZnO, 1-5 parts of stearic acid, 1-3 parts of antiager IPPD, 1-3 parts of antiager RD, 10-40 parts of carbon black N330, 1-10 parts of coupler Si-69, 20-60 parts of filler TG-300, 1-5 parts of sulphur, 0.1-3 parts of accelerant DPG and 3-10 parts of aromatic hydrocarbon oil. Through reasonable structural design, strip-shaped and circular-truncated-cone-shaped protrusions are designed on the bottom face of the product, and the effect of adjusting rigidity is achieved. Meanwhile, through the integrated structure, the stability of the dimension of the product is greatly guaranteed, assembly is easier and more convenient, and the defect that assembly is affected by the large dimension change of an original product foaming cushion plate is relieved. In addition, the product is molded through one-time sulfuration, the production process is simplified, the production process is controllable, the product performance is stable, cost is reduced, and waste is reduced.