Wollastonite with its non-toxic, tasteless, non-radioactive advantages, can replace asbestos harmful to human health, is a natural green raw material. At the same time, the long fiber wollastonite needle powder can partially replace the amount of broken short glass fiber, which can greatly reduce the production cost of the product. After special processing technology, wollastonite can still maintain its unique needle-like structure, so that the impact resistance, bending strength, wear resistance, corrosion resistance, heat insulation and fire resistance of new environmental protection building materials such as calcium silicate board, fire prevention board, fiber cement board, calcium sulfate board, etc. added with wollastonite needle powder are greatly improved. In addition, wollastonite can also be used for white cement, building putty and so on.