Deuterated bisarylurea compound and preparation method thereof, and application of compound in preparation of antitumor drug

The invention provides a deuterated bisarylurea compound and a preparation method thereof, and application of the compound in preparation of an antitumor drug. The compound has a structure as shown in a general formula (I). The preparation method comprises the following steps: with methyl 4-chloropyridine-2-formate as a raw material, sucjecting methyl 4-chloropyridine-2-formate and methylamine or deuterated methylamine to a substitution reaction; then subjecting a product obtained in the previous step to condensation with p-aminophenol or deuterated p-aminophenol; and reacting a product obtained in the previous step with 4-chloro-3-(trifluoromethyl)phenyl isocyanate or deuterated 4-chloro-3-(trifluoromethyl)phenyl isocyanate so as to prepare the deuterated bisarylurea compound. Experiment results show that the deuterated bisarylurea compound provided by the invention has tumor treatment effect. The invention also provides application of the compound to research and development of the antitumor drug.