Simulation Based Acquisition (SBA) has been proposed by DoD of the United States since 1990s. Virtual Prototype (VP) is one of the most important concepts in SBA, and an important application of the Modeling and Simu-lation. Using virtual prototypes instead of physical ones when products designing, testing, valuating and personnel training can reduce the time and cost of products development, improve the quality of products and satisfaction of cus-tomers. Some pieces of advice on VP testing are proposed to overcome some shortness in the traditional procedures of military equipment acquisition, improve the quality of testing, and the ability of evaluation, based on the technology of VP.