A three-tier architecture mode is adopted to realize LIMS. The interface layer and business layer of the system are separated from each other, and no matter the changes of the interface layer or business layer, they will not affect each other. Therefore, Sheng Yuanguang believes that it is beneficial to the maintenance and function expansion of the system and enhances the flexibility of the system. Business logic is implemented on the application server, not on each client. At the same time, access to data can only be done through the application server, thus enhancing the security of the system.