Proportion of plastic materials in the life more and more high, but also more and more high to the requirement of the quality, the injection molding is an important means of production, the improvement of technology is becoming more and more urgent, and the influence factors of injection molding products is more, but the injection molding process conditions is one of the important influence factors, the following will introduce all the effects of process parameters on product performance. The traditional mold design and process parameters are mainly dependent on the designer's experience and skill, the rationality of the design of the mould only by repeated test and repair the mold, the setting of process parameters and can only be modified by repeated test, the lack of scientific basis, long production period, high cost, the quality is not certain. Due to the molding process parameters directly determines the flow state of melt in cavity, the quality of products has the most direct and profound influence, so finding products forming the optimal process conditions, to process control of forming process, is an effective way to improve the quality of plastic products. This is because, in the process of forming, precision molding machinery, reasonable die design and excellent material performance only if the reasonable forming process Settings can be reflected on the other hand, molding machinery, mould design and material performance of defects sometimes can be set up through the appropriate molding process to make up for. Injection molding process, therefore, has a vital role on the product quality