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Control software is a very important kind of software in Launch Vehicle project. In the traditional mode, the control software of models is special, different project’s control software has the problems of similar functions, repeated development, low development and maintenance efficiency. Aiming at the appeal problem, a set of general control software based on object-oriented is designed by using object-oriented analysis and design technology. Through modeling and analyzing the business logic of the control software, the command entity classes that meet specific rules are abstracted, so that the command entities can be combined with each other, and the user can form the control process by combining the command entities. Adopt XML file persistence control process to improve the readability and changeability of data files. The details are shielded by object-oriented technology, and the specific requirements are realized by extension without changing the existing design. Through test and analysis, the structural design of the software is reasonable, and the expansibility and maintainability are good.