The invention belongs to the composite material molding technology and particularly relates to a winding tool and a winding method for winding body fabricated parts composed of multilayer closed-loop unidirectional carbon belts. The invention discloses a winding tool and a winding method applicable to multilayer closed-loop carbon belt winding body. The winding tool applicable to multilayer closed-loop carbon belt winding body avoids the defects of fiber folding in a 0-degree direction, super-bad thickness of a winding body and poor molding quality in the traditional windy technology; and has the advantage of easiness and convenience in process operation.