The invention relates to a mucilage for producing rubber coated fabric products, in particular to an anti-infiltration mucilage for rubber coated fabric products. The mucilage is prepared from the following raw materials in portions by weight: 100-120 portions of neoprene, 0.2-0.7 portion of sulfur, 0.2-0.7 portion of accelerator M, 0.2-0.7 portion of accelerator NA-22, 2-7 portions of zinc oxide, 2-6 portions of magnesium oxide, 4-6 portions of paraffin, 4-6 portions of pine tar, 0.2-0.7 portion of anti-aging agent H, 4-6 portions of vaseline, 10-15 portions of machine oil, 20-35 portions of high abrasion furnace black, 40-60 portions of calcium carbonate and 0.5-1.0 portion of colorant. The mucilage is prepared from the neoprene, and ultra-fast accelerators are used in the formula, so that the mucilage can be naturally vulcanized at room temperature, thereby omitting the high-temperature vulcanizing process in the original process, reducing the investment for equipment and barrack capital and reducing the energy consumption at the same time. When being used for the rubber coated fabric products, the invention has the advantage of favorable anti-infiltration effect and enhanced product percent of pass. The colorant is added into the formula, so that the color of the mucilage is the same as that of the rubber coated fabric products, and the mucilage does not affect the product appearance.