Electrochemistry methods and surface characteristics were used to investigate the corrosion behaviors in the initial stage and the inhibition efficiency of BTA in simulated soil environments for simulated bronze samples. The results show that the inhibition efficiency can reach 99.96%; A protrusion morphology of corrosion products formed by PbSO4 with a channel formed by Cu compounds that can transport corrosive media was found in the cross-section of the Pb-rich samples. A mechanism for galvanic corrosion was proposed with the assistance of the inhibition effect of BTA, which can explain the different corrosion behaviors of samples with different Pb contents.