Trimethyl phosphite has important application value in the field of pesticide chemical industry.It is mainly used as an intermediate in organophosphate insecticides to further synthesize phosphonium,dichlorvos and other highly effective insecticides.In addition,trimethyl phosphite also plays an important role in the fields of flame retardation and catalysis.However,in the actual industrial production process,it is necessary to consider the toxicity of trimethyl phosphite,so it has important practical significance for the optimization of the process flow and the"three wastes"treatment process.It is conducive to the effective operation of safe production and the improvement of energy saving and emission reduction and economic benefits,reduce the occurrence of production safety accidents,and ensure that employees'life,health and safety of enterprise property are not lost.This paper mainly collates and learns the industrial production process of trimethyl phosphite by referring to literature materials,and on this basis,further conducts comprehensive understanding and analysis of the entire process,and tries to put forward some insights for further optimization of the production process plan,so as to reduce production energy consumption,improve production efficiency and reduce the emission of"three wastes".