This paper introduced the design of gamma energy spectrometer by technology of LabVIEW and Bluetooth. The hardware of system included portable gamma energy spectrometer, Bluetooth module and PC. The software of system included the composed of acquisition system by the MCU and analysis system by PC.The design of acquisition system included the design of main program, liquid crystal display module, keyboard module, Bluetooth communication module and data acquisition module. The design of analysis system included the design of serial communication module, data storage module and data processing module. Practice shows that the energy spectrometer has a user-friendly, flexible, low cost, easy to expand and good performance.