Summer and autumn tea tastes bitter and has a weak aroma, which is restricted by technology, quality and other factors. Therefore, the utilization rate of summer and autumn tea has been relatively low, and the tea-producing areas mainly pick spring tea in China. However, the matcha powder made by grinding summer and autumn tea can be deeply processed into various products, which can effectively enhance the utilization value of summer and autumn tea. The low-temperature matcha powder grinder manufactured in this paper can release the potential for summer and autumn tea utilization. The tea leaves are coarsely crushed into small particles, then enter the crushing bin, and are hammered into very fine powder by the double crushing grinding structure. The powder passes through the mesh screen and is finally collected. The machine can control the particle size of the powder by adjusting the aperture of the mesh screen, and solve the problem of color change caused by too high temperature in the tea processing by temperature control technology. This meets the standards and requirements of tea factory production and operation, can provide a wider development path for the middle and low-grade green tea industry in China, and can significantly improve the added value of tea deep processing.