A golf club shaft composed of a laminate of a plurality of carbon fiber reinforced prepreg sheets having a length equal to the full length of the golf club shaft and are sequentially wound round a mandrel. Per-area weights of the carbon fibers of the carbon fiber prepreg sheets having the length equal to the full length of the golf club shaft are gradually increased from an innermost-layer CF prepreg sheet to an outermost-layer carbon fiber prepreg sheet in such a way that the per-area weight of the outermost-layer carbon fiber prepreg sheet is set larger than that of the innermost-layer CF prepreg sheet.