Virtual instrument technology, which is made up of computer platform, dedicated hardware and software, is the direction of measurement technology at present, with features of easy operation, high reliability, wide adaptation surface and so on. Based on the way of virtual designing instrument control, combined with UAV simulation of each system module generated data characteristics, adopted GDI + graphics rendering technology, used VC + + programming language to develop the virtual instrument control with aesthetics, general, and this control is successfully used in a UAV ground flight control test system. What’s more, by using of this graphic control base, we can develop virtual instrument of different data type conveniently and quickly, and these virtual instrument can applied to various fields of engineering measurement.