To provide a method for suppressing the generation of stress corrosion cracking which improves the factor of stress corrosion cracking generation for improving the stress corrosion cracking resistance of piping and allowing the piping to withstand over a long period, and improves stress corrosion cracking resistance.

In the method where the face 5 to be operated including a weld zone 3 and a weld heat-affected zone 4 in a pipe 1 is subjected to heating treatment based on prescribed heating treatment conditions, so as to suppress the generation of the stress corrosion cracking of the piping, as the heating treatment conditions, the heat input volume per unit length of the pipe 1 and/or the operating range in the piping is decided in accordance with the thickness of the pipe 1, and further, the residual stress in the back face of the face 5 to be operated to which the heat treatment is performed is improved by the heating treatment.