The invention discloses a high-temperature resistant workshop primer, which consists of curing agent and slurry according to a weight ratio of 1:2-4, wherein the slurry comprises the following components in portion by weight: 10 to 30 portions of isopropanol, 0.5 to 4 portions of bentonite, 0.1 to 2 portions of nano gaseous silica, 0 to 5 portions of precipitated silica, 2 to 10 portions of butanol, 1 to 10 portions of industrial ethanol, 50 to 70 portions of zinc powder, 5 to 15 portions of dimethyl benzene, 0 to 20 portions of ferro-phosphorus powder, 0 to 10 portions of ferrotitanium powder, 0 to 5 portions of stainless steel powder, 0 to 2 portions of nickel powder, 0 to 2 portions of titanium white powder, 0 to 2 portions of alumina powder, 0 to 2 portions of precipitated barium sulfate, 0 to 5 portions of feldspar powder, and 0 to 2 portions of aluminum paste. The curing agent comprises the following components in portion by weight: 0 to 2 portions of ammonia water, 0 to 2 portions of sodium ethylate, 0 to 2 portions of potassium fluoride, 15 to 50 portions of ethyl silicate, 0 to 2 portions of AMP-95, 0.05 to 1 portion of sulfuric acid, 0 to 0.5 portion of potassium hydroxide, 3 to 15 portions of distilled water, 5 to 10 portions of industrial ethanol, 15 to 60 portions of isopropanol, and 0 to 10 portions of silicon resin. The temperature resistance of the high-temperature workshop primer can reach 800 DEG C, and the burned area of the workshop primer in welding seams and fire areas can be reduced after high-temperature processing such as welding, cutting, fire correcting and the like.