A folding tool set includes an accommodating seat, a fixing shaft, many tools, many spacers, and an elastic member. The accommodating seat defines an accommodating space. The fixing shaft is disposed on the accommodating seat and has a polygonal radial section. One end of each tool is formed with a connecting hole through which the fixing shaft passes. The tools are pivotally connected to the fixing shaft and movably accommodated in the accommodating space. The spacers are spaced apart from each other and disposed on the fixing shaft. The spacers each have a through hole. The through hole corresponds in shape to the radial section of the fixing shaft. The elastic member is disposed on the fixing shaft. The elastic member has elasticity in an axial direction of the fixing shaft. When one of the tools is pivoted, the fixing shaft won't be driven to link the other tools.