It was introduced that the influence and mechanics of anti-welding procedure on corrosion resistance of the different materials such as Q235 steel,16MnR steel and 20g steel in the acidic and alkali solutions. This method is to carry on the heat treatment for each kind of material sample, and use the cooling medium to cool the welding joint rapidly, in order to obtain the negative temperature departure that is opposite to the welding temperature field，and relieve the residual stresses produced in the welding process. Q235 steel and 16MnR steel which are processed by 350℃ anti-welding procedure, compared with the unprocessed samples, the corrosion rate in the acidic solution reduces 66.1％and 67.9% respectively. The results show that the anti-welding procedure relieves effectively the welding line residual stresses and slows up the stress corrosion rate. This method can be applied to the welding structures which are required to prevent the stress corrosion.