The invention discloses a machining mechanism of a product with a texturing surface. The machining mechanism comprises a mold; a cavity for accommodating an injection product is formed in the mold; the inner surface of the cavity is the texturing surface; the mold at least includes a third slide block, a fourth slide block and a fifth slide block forming the cavity, wherein the third slide block and the fourth slide block are arranged side by side; a vertical fourth arc surface is arranged on one side of the fourth slide block; the third slide block is connected with the edge of the fourth arc surface; the fifth slide block is positioned on the upper surfaces of third slide block and the fourth slide block, and is connected with the same; a third arc surface is arranged in the connecting place between the fifth slide block and the fourth slide block; correspondingly, the edge line, near one side of the third slide block, of the fourth arc surface is staggered from the edge line, near one side of the third slide block, of a second butt joint arc surface; and or, the edge of the third slide block spans the edge line, near one side of the third slide block, of the second butt joint arc surface. The machining mechanism has the characteristics of simple and reasonable structure and high product pass percent.