The invention discloses a rubber sealing strip for a vehicle fuel tank. The rubber sealing strip is composed of the following raw materials in parts by weight: 100 parts of acrylate rubber, 30-50 parts of carbon black, 0.5-2 parts of microcrystalline wax, 1-2 parts of an anti-aging agent CD, 1-2 parts of a stearic acid S-50V, 1-1.5 parts of an interfacial activator G-8205, 0.5-1 part of an interfacial activator RL-210, and 1-1.5 parts of a flow dispersion agent. By the way, the rubber sealing strip for the vehicle fuel tank is provided; the rubber sealing strip is prepared according to the proportion of the raw materials, has no cracking, meets the requirements of tensile strength, elongation rate, hardness and other properties of the product, greatly shortens the development period, and foresees that product design has no defects.