The molecular structure of dimethyl carbonate contains carbonyl, methyl, methoxy and carbonylmethoxy, so it can be widely used in organic synthesis reactions such as carbonylation, methylation, methoxylation and carbonylmethylation, so it has a very wide range of applications, mainly used as carbonylation and methylation reagents, gasoline additives, raw materials for the synthesis of polycarbonate (PC), etc. 1. A new type of low toxic solvent can replace toluene, xylene, ethyl acetate, butyl acetate, acetone or butanone in the paint and adhesive industry, which is an environmental friendly green chemical product. 2. Good methylating agent, carbonylating agent, hydroxymethylating agent and methoxylating agent. It is a kind of chemical material with wide application. 3. Phosgene, dimethyl sulfate, methyl chloroformate and other potent drugs are ideal substitutes. 4. Synthesis of polycarbonate, diphenyl carbonate, isocyanate, etc. 5. In medicine, it is used to synthesize anti infective drugs, antipyretic and analgesic drugs, vitamin drugs and central nervous system drugs. 6. Pesticides are mainly used in the production of methyl isocyanate, and then some carbamate drugs and insecticides (anisole). 7. Gasoline additives, lithium battery electrolyte, etc.