Traditional oscilloscope is unavailable in remote measurement and control also lacks of interchangeability. Some study was done on IVI(Interchangeable Virtual Instrument) technical structure and the applications on software. This virtual scope program that is based on IVI driver was designed by virtual instrument technology and LabWindows/CVI, which is a tool to develop virtual instrument. The software can implement functions of measurement, debugging, monitoring and so on. Compared with the traditional instrument, virtual instrument has great advantages on remote control and interchangeability.