The invention provides a one-pot method for synthesizing 1,2,3-triazole compounds, and belongs to the technical field of organic synthesis. According to the one-pot synthetic method for the 1,2,3-triazole compounds, nitrobenzene compounds and alkyne compounds serve as starting materials, and a plurality of the 1,2,3-triazole compounds are synthesized conveniently in a one-pot mode under the catalysis of copper. The 1,2,3-triazole compounds synthesized with the one-pot synthetic method are important intermediates for drug synthesis, and have very important application prospects in the fields including biomedicine, medicines and the like. Certain components are already widely used for clinics. The method adopts one-pot preparation, so that diazotization reaction is avoided, organic azides are not directly used, and the one-pot synthetic method for the 1,2,3-triazole compounds is high in safety, simple in operation, mild in conditions, low in cost and easy to use for industrial production and has good application prospects.