The invention relates to a rotatable tooling for clamping multiple printed boards and a use method of the rotatable tooling. Two groups of clamping devices are respectively fixed on a bracket and a sliding support through large knobs; the printed board is clamped in four clamping clips or sheathed into four clamping struts; a flange sliding block is locked on linear guide rails; a pin is pulled out, and free rotation of the clamped printed board can be realized by rotating a rotary bracket at any time in the process of welding or removing components; after the welding or the removal of the components is finished, the pin is inserted into a pin hole I of the rotary bracket and a pin hole II of a base, so that the rotary bracket and the base cannot relatively rotate. The rotatable tooling has the beneficial effects of stable integral structure, large clamping force, simple structural parts, convenience in processing and capabilities of freely adjusting in multiple dimensions such as height, angle and rotating angle, and clamping the printed boards with all sizes. According to the rotatable tooling disclosed by the invention, the working efficiency of welding manual inserting parts of the printed boards and removing and welding the components at a workshop is improved, and the assembly or repair progress is guaranteed.