The invention belongs to the field of prism processing, and particularly relates to a production process and a polishing mold of a prism. Aiming at the problems of poor quality of lenses produced by the existing lens processing technology, lots of defective products, a low qualification rate and low processing efficiency, the following solution is proposed. The production process of the prism includes the following steps that S1, raw materials are prepared, a cutting machine is utilized to cut glass raw materials to form strip-shaped glass with the cutting length being equal to or greater than1 meter, and the width of the strip-shaped glass meets the requirement for the width of a product; and S2, oblique planes are grinded, a plurality of special emery grinding wheels containing emery from coarse to fine are arranged in an oblique plane edge grinding machine and used for grinding the oblique planes of the strip-shaped glass, and the angles of the grinded oblique planes are controlled3o10 +/- 15. According to the production process and the polishing mold, not only can the processing efficiency of a prism body be improved, but also the processing quality can be improved, the produced lens is shaped well, no defective products is produced, and the qualification rate is high.