The invention provides a technological method for producing glyphosate and co-producing ammonium sulfate with a glycine method. The method comprises steps as follows: ammonium hydroxide obtained after catalytic wet oxidation and ammonia concentration of a glyphosate mother solution and dilute sulphuric acid obtained after purification and dehydration of methyl chloride are mixed and enter a reaction kettle, ammonia gas is rapidly introduced into the reaction kettle for reaction, an obtained ammonium sulfate solution is filtered, evaporated, crystallized and dried to obtain a finished product of ammonium sulfate; and ammonia-introduced blow-out gas enters a biochemical pool for treatment after catalytic wet oxidation. According to the technological method, dilute sulphuric acid dried by methyl chloride is treated, ammonia after catalytic wet oxidation is effectively utilized, and ammonium sulfate required by glyphosate preparation production is obtained through co-production, so that the environmental protection pressure is reduced, and the purpose of resource utilization of diluted acid and ammonia is achieved.