In order to speed up the construction of live-virtual-constructive (LVC) training system in our army, summarizes the development experience of LVC training system construction in the US army through the analysis of literature, and deeply analyzes the construction of LVC comprehensive training environment, key technologies and the challenges faced by the construction of our LVC training system. The results show that LVC training is an important way to lead the transformation of current military training, and it is also a key measure to enhance the actual combat capability. Our army should learn from the advanced experience of the US army and accelerate the construction of LVC training system.