The invention discloses a full-temperature-range pressure swing adsorption gas separation, refinement and purification method.By means of the difference of the temperatures and pressures of different raw material gases and the difference of the adsorption separation coefficients and physical chemistry properties of all components in the raw material gases in the temperature range of 80-200 DEG C and the pressure range of 0.03-4.0 MPa, the adsorption or desorption regeneration operation of the pressure swing adsorption circulation process is adjusted by coupling all separation methods, the adsorption theory that the pressure or temperature swing adsorption separation process is only limited to the adsorption and desorption regeneration circulation operation through pressure or temperature changes is expanded, and therefore all raw material gases are separated, refined and purified by achieving the energy gradient utilization in the gas separation, refinement and purification process and achieving the circulation operation, where adsorption, desorption and regeneration are easily matched and balanced, in the moderate to low cold and moderate to high temperature pressure swing adsorption separation process, and it is changed that a traditional adsorption method is only limited to the auxiliary effect of refinement and purification, and adsorption becomes the basic separation unit operation just as important as refinement, absorption and extraction separation.