LVC (live virtual constructive) is an important means of joint training in the US army, and the JLVC (joint live, virtual, constructive) federation is the technical support mode of LVC training. Based on the research of the background of LVC and the development of distributed simulation, the interoperability of JLVC federation is analyzed; by learning from the experience of the US Army in solving interoperability problems, 3 Enlightenments are drawn to speed up the construction of integrated joint training of our army. The results show that the analysis can provide a valuable reference for the construction of the joint training environment of our army.