An intelligent dynamic threat assessment system for ultra-long range air raid targets is designed, which realizes a breakthrough from theoretical research to practical application. After proving the superiority of the comprehensive weight method, the analytic hierarchy process (AHP) method and entropy weight method are selected to obtain the comprehensive weight vector through the least square optimization model. The hardware of the system is configured according to the requirements of information processing center and combat command center to meet the needs of actual combat. The design of the system software considers the characteristics of modern air combat, such as large number of targets, full types, fast maneuvering, and many emergencies. The design of hardware and software fully pay attention to the security confidentiality. The system has strong real-time performance and meets the requirements of dynamic evaluation. The effectiveness of the system is verified by simulation.