The card issuing machine and the application machine designed this time are two products that are used together. The application of the self-service terminal greatly reduces the working pressure of manual card issuing. Moreover, it can work continuously for 24 hours. The appearance design style of the self-service card issuing machine is moderate but durable, which perfectly matches the public security office scene. Through the interactive interface of card taking operation repeatedly deliberated by designers, users can easily complete the card taking process without looking at the operation process. In terms of product size design, the designer studied the height characteristics of the Chinese and finally obtained 173CM human-machine reference data to define the height of the operation. Sheet metal terminal structure design: New Silk Road Design Company adopts the modular design concept, where it is broken and repaired, to ensure the stability and sustainability of the machine, and the simplest disassembly and assembly method is adopted in the assembly design to reduce welding and polishing as much as possible The processing process provides more time guarantee for improving the mass production of products.