The invention relates to a heat resisting and distortion preventing material used for an air conditioning fan and a manufacturing method thereof. The invention aims at solving the problems existing inthe prior art that the fan has poor running stability and increased noise after the long-term use. In order to reach the aim of solving the technical problems, the invention has the technical proposal that the weight percentage and the ingredient proportion are as follows: the plastic backing material is 50 to 70 percent, the glass fiber is 10 to 30 percent, the mica is 3 to 5 percent, the wood flour is 1 to 2 percent, the solubilizer is 1 to 5 percent, the dispersant agent is 1 to 4 percent, and the antioxidant is 1 to 4 percent. The mica, the wood flour and the plastic backing material forma copolymer with a continuous structure and even distribution under the mixing action of the solubilizer and the dispersant agent. The invention adopts a blending modification method, thereby improving the rigidity of new blend obviously and greatly increasing the ability for preventing distortion.