A golf club head which comprises a face, a crown, a sole, a sidewall extending from the periphery of the sole towards the crown excluding the face, and a neck to be fixed to a shaft, and the head is formed by welding together a face member for the face, a crown member for the crown and a walled sole member for forming at least the sole and the sidewall, wherein the walled sole member is made by monoblock casting, and the face member and the crown member are each made by plastic deformation processing.