The invention discloses an application of 3-amino-1,2,4-trizole as a bronze corrosion inhibitor, belonging to the technical field of corrosion and protection of metal materials. The 3-amino-1,2,4-trizole has a concentration of 10-40mg / L in a simulated atmospheric solution and the electrochemistry data show that the 3-amino-1,2,4-trizole used as the bronze corrosion inhibitor has good corrosion inhibiting effect. Particularly, after adding 30mg / L 3-amino-1,2,4-trizole corrosion inhibitor in the simulated atmospheric solution, the bronze corrosion current is greatly reduced from 6.886uA / cm2 to 0.2684uA / cm2 and the corrosion inhibition efficiency is 96.1%, thereby proving that the 3-amino-1,2,4-trizole can be used as the bronze corrosion inhibitor, is environmental-friendly, and has good corrosion inhibiting effect to the bronze in the system after used.