A new detection system for ultraviolet rays is introduced. The system is composed of five parts: ultraviolet ray sensors, A/D data acquisition module, data processing module, DZZ12 management center, and computer monitoring center. With the high precision and high stablebility detection sensors, the radiation intensities of UVA and UVB are measured and sent to the A/D module in a voltage signal way. The data process module is in charge of intensity calculation and data statistics according to the meteorological standards. The system has good expansibility and compatibility, and the DZZ12 management center can handle several data process modules. It is convenient to set the local parameters with the soft keyboard and LCD screen. The computer monitoring center has the capability of remote data acquisition and remote control of the DZZ12 management center. The operating procedures of the system are described, and the data analysis results are presented.