Abstract: Due to the limitations of traditional physical-based testability verification methods that some faults cannot be injected or can easily cause equipment hardware damage after fault injection, the testability verification work is moving towards low-cost, high efficiency, repeatable, process-controllable, and zero-risk advantages. The hardware-in-the-loop simulation is even moving forward in the direction of full digital virtual simulation experiment. In this paper, a testable virtual verification system for the radar antenna array is developed with the help of powerful computer computing power and visualization technology. By introducing multi-agent simulation technology, a virtual prototype that can simulate its structure, function and operating status is established. The function of selecting fault sample size and distributing fault sample is realize by using LabVIEW platform. In order to realize the simulation fault injection of the virtual prototype, a communication method between the multi-agent virtual prototype and the LabVIEW platform is proposed. The fault injection simulation results show that the virtual prototype can quickly and effectively identify the injected faults and isolate the injected faults, and it can dynamically display the propagation path of the faults between the agents. It is proved that the system can provide a new way of virtual verification with high-efficient and low-cost.