According to the frequent change of the business demand in display system information processing and commander’s high requirement for individuality of display contents, by using rule engine as the command and display system data processing core, 3 kinds of rule models including the computation, comparison and filtering models were given and rule conflict resolution strategy was proposed. Command and display software system with rules customization, page customization, data receiving, processing engine, display control software drive was designed. The separation for business processing logic and software code of command and display system was implemented. The verification results show that the method can transform command information processing method into simple business rules, which is convenient for non software programmers to change the logic system of business process, thus avoiding the frequent change of the software code, therefore enhance the application of the system rapid response to demand changes.