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In order to test the performance of light emitting and display devices, reduce human error and consider the influence of working temperature on the electrical and optical properties, an optoelectronic performance test system for light emitting and display devices was designed and developed. The performances (such as brightness, temperature, voltage-current and life)could be measured in the same software. This system consists of the power(GPD-3303), the luminance meter (LS-110), the temperature measuring module(temperature sensor and single chip computer ) and the measurement software. Based on LabVIEW, utilizing luminance meter LS-110, the brightness of the device is tested. Utilizing temperature sensor and single chip computer, the temperature of the device is tested. Controlled step output of the power by computer program, the actual output current and voltage are read and the collected data is sent to the computer. Real-time display of the test process about the devices was realized. The photoelectric properties of luminescent devices can be automatically measured and displayed at the same time. The test system has the function of automatically saving dataand image. It is very convenient and useful to using this kind of system so that it makes the experiment computerized, and has advantages of high integrity, accuracy, automatic extent, and convenient.