The design of the software in the training system of reconnaissance radar analysis, which is object-oriented, fully makes use of the development thought of UML. It makes clear the requirements of system function, constructs the use case digrams of the system and the relevant class diagrams. Using the tool of UML dynamic modeling, it respectively describes the scene generator module, radar signal generator module, reconnaissance radar analysis training module of the target system in detail. The users interface and the data base structure of the system are designed in great detail and all the subsystem in target system are designed and developed.