The traditional temperature measurement methods are not suitable for high-temperature objects. However, objects at different temperature have different characteristics of thermal radiation, so it is a practical approach to calculate the temperature of the object according to the radiation light. The colorimetric temperature measurement is calculated by radiation intensity of two different wavelengths lights, and it reduces the errors which are created by the emission rate and signal transmission. It can greatly reduce the development cycle and provide a good interactive interface by using the virtual instrument for development of measurement system. The colorimetric temperature measurement which is developed on the virtual instrument technology platform not only implement real-time monitoring of temperature, but also transfer temperature data and control signals by accessing network via Ethernet interface.