A sound source location scheme based on Smartphone is designed，which uses the microphone of smartphones and the acoustic stopwatch function in Phyphox software to realize the location detection of unknown sound sources．Compared with other methods for measuring sound location，this experimental design fully utilizes the potential of smart phones，uses the Phyphox software to locate the mobile phone as a sensor node，and proposes a novel location scheme:use the smart phone software Phyphox to collect and process the sound signal，calculate the time difference between the sound signal and the microphone of the mobile phone，and then use the time difference to calculate the coordinate position of the sound source target in the two-

dimensional space．