采用失重法和电化学方法研究了牛黄解毒片试剂在1 mol/L HCl溶液中对Q235碳钢的缓蚀作用.结果表明,环境友好的牛黄解毒片试剂在盐酸中具有一定的缓蚀作用.随着缓蚀剂加入量的不断增大,其缓蚀效果呈现先增大后减小的的极大值行为,在加入量为1.25 g/L时,其缓蚀效率达到最大值. Inhibition of Niuhuangjiedu tablet reagent on Q235 carbon steel in 1 mol / L HCl solution was studied by weight loss method and electrochemical method. The results showed that Niuhuangjiedu tablet reagent had certain corrosion inhibition effect in hydrochloric acid. With the increasing amount of corrosion inhibitors, the corrosion inhibition effect increases first and then decreases, and reaches its maximum at a dosage of 1.25 g / L.