A wireless hot-film wind speed profiler as well as its data acquisition and processing system were developed in order to avoid large measuring errors and inconvenience of moving by using conventional pressure differential wind profiler. The tested system was calibrated in soil-erosion wind tunnel. The system can implement multi-points data acquisition and wireless transmission, with the advantages of simple construction, reliable performance, easy carry and installation, anti-contamination and wide range of speed measurement. The experimental result showed that for the calibrated wireless hot-film wind speed profiler, the calibrated error is less than 0.3798m/s, and the measured wind velocity profiler is in exponential distribution, which is in accordance with the characteristic of wind speed perpendicular distribution at near soil surface.