Trimethylaniline is an intermediate widely used in dyes, pesticides and other industries. The raw material for the synthesis of homotrimethylaniline is homotrimethylbenzene, which is present in petroleum. With the realization of large-scale industrial production in China, the production of trimethylbenzene continues to increase, so the development of its downstream products is more and more widely paid attention to. The downstream products of homotrimethylbenzene, such as homotriphthalic acid, homotrimethylaline, M acid, etc., are important chemical products. Using homotrimethylbenzene as raw material to synthesize homotrimethylaniline, homotrimethylene nitrification reaction is the key, which is directly related to the production cost and product quality