The invention provides a test simulation system which comprises two CPCI industrial control computers and one CPCI computer. Each industrial control computer is provided with a general signal processing platform which serves as a data processing unit, the general signal processing platforms are connected via front panels of the CPCI industrial control computers, a connection interface comprises 10MHz system clock output, 10MHz system clock input and a GTH/GTX transmitting-receiving interface, each general signal processing platform is connected with the CPCI computer via a PCI interface chip PLX9054, and a PCI bus protocol is converted into a local bus protocol. In the system, front-end collection and output circuits are replaced according to requirements to expand the interface type and quantity; and broadband signals can be received and generated, RF bandpass sampling can be carried out directly, the system is more suitable for software radio, and the system can satisfy requirementsof common measurement and control, communication and radar signal processing algorithms.