Distributed sound localization system for low altitude targets based on the platform of TMS320C6713 is constructed. In the system, DSP is the core processor and signals received by the microphone are sampled via AD chips. The direction of the sound source is calculated through TDOA and the angles of each node are fused by direction finding cross localization method to calculate the position of the sound source. The simulation and experimental results show that the system has high precision and stability and can meet the needs of the practical applications for low altitude targets.