CNC processing equipment has high efficiency and good quality, but if the process design is not properly arranged, it can not well reflect its advantages. From the experience of some CNC processing factories, there are some problems as follows: 1. The reason why the CNC processing process is too dispersed is that it is afraid of complexity (referring to preparation time), simple programming, simplified operation and processing, easy to adjust the tool setting with a knife, and used to ordinary processing. In this way, the product quality (position tolerance) is not easy to guarantee, and the production efficiency can not be well developed. Therefore, CNC processing technicians and operators should be familiar with the knowledge of numerical control processing in many ways, try to master the relevant knowledge, and use the method of process centralization as far as possible, which will naturally reflect its advantages. After adopting process centralization, unit processing time increases. We arrange two equipments face to face and realize one person to operate two equipments. The efficiency has been greatly improved and the quality has been well guaranteed. 2. The processing sequence of CNC is unreasonable. Some CNC operators often arrange the processing sequence unreasonably, considering some problems of preparation. NC machining is usually carried out according to the requirements of general machining process, such as first roughness, then fineness (tool change), first inside and then outside, and reasonable selection of cutting parameters, so that the quality and efficiency can be improved. Careful use of G00 (G26, G27, G29) fast positioning instruction G00 instruction has brought great convenience to programming and use. However, if set up and used improperly, it will often cause adverse consequences such as overshoot when returning to zero, decrease of precision, and pull of equipment guide rail surface due to excessive speed setting. Failure to pay attention to the zero return route can easily lead to safety accidents of collision workpiece and equipment. Therefore, when considering the use of G00 instructions, we should consider carefully and not arbitrarily. In NC machining, especially attention should be paid to strengthening the search and trial run of the program. After the program is input into the control system, the operator should use SCH keys and,,,mobile keys to indeterminate and determine the retrieval, and modify the program if necessary to ensure the accuracy of the program. At the same time, before formally executing the program processing, it must go through the program trial run (turn on the power amplifier) to confirm whether the processing route is consistent with the design route. The above are some common problems and solutions when using CNC processing equipment. In practice, there may be some other problems, but as long as CNC processing engineers and operators brainstorm, carefully grasp the knowledge and skills of numerical control, numerical control equipment can play a very good role for enterprises.