An integrated multi-rotation-direction fan comprises a supporting plate and a plurality of fan blades which are uniformly arranged on the supporting plate; each fan blade is of a T-shaped structure and is composed of a circular-ring-shaped bottom plane and a straight fan blade body perpendicular to the bottom plane; the supporting plate is in a circular ring shape, the circular ring face of the supporting plate is provided with a plurality of through circular-arc-shaped limiting hole grooves corresponding to the fan blades, and each circular-arc-shaped limiting hole groove is composed of two symmetrical semi-arc-shaped limiting hole grooves; the circular-ring-shaped bottom planes of the fan blades can be rotated in the circular-arc-shaped limiting hole grooves and fixed to the supporting plate through fasteners; and the windward angle of the straight fan blade bodies is 25-155 degrees through rotation. The integrated multi-rotation-direction fan is simple in structure, convenient to use, low in cost and small in investment, thus, the fan has multiple optional effects, standardization, modularization and universalization of parts are improved, the production procedure is shortened,and moreover, motor fan maintaining is more simplified.