In this paper, a virtual instrument technology based on LabVIEW is proposed to measure laser power remotely and automatically. This system is based on DH-JG2 optical power meter, NI-USB 6008 data acquisition card, personal computer(PC) as well as HP laserJet 1020 Plus printer, which can realize the functions of laser power data acquisition, data analysis, saving the original data to access and generating test report. The power output of laser is unstable. Consequently, abnormal conditions of laser can't be feedback to inspectors with the available devices. In order to solve this problem, a mobile phone and TCP protocol are adopted to realize the function of remote controlling, attaining the real-time processing. The detection system has been used to measure laser power curve that can be used for CW lasers. It shows that the design has a good performance of the real-time detection and a high operability, as well as a broad prospect.