The invention discloses a fabric-medium compensator for pipeline docking. Auxiliary flanges are welded on the outer sides of an inner casing and a diversion pipe respectively, compensation material is arranged between the auxiliary flanges and comprises alumina silicate fibers on the inner layer and a protective layer on the outer layer, the protective layer is fixed at the edges of the inner sides of the auxiliary flanges, and a stainless steel mesh, a waterproof layer, a fabric layer, a fiber layer, asbestos cloth, a rubber layer and an anti-corrosion film are arranged on the protective layer from outside to inside. The fabric-medium compensator utilizes fabric as compensation and is high in compensation ability and capable of carrying axial stretching and certain torque. The multilayer structure has good sealing effect and is anticorrosive and resistant to high temperature, errors can be neglected during mounting, and the fabric-medium compensator is simple and convenient to mount, good in using effect and very conducive to popularization and implementation.