Based on TMS320LF2407,designed an temperature controlling module of driving control system of fiber laser pump source;The paper firstly briefly introduced the hardware structures and the working principles of sampling circuit and TEC driving circuit;secondly, expatiated the general idea of the whole program and self-adaptive fuzzy-PID controlling algorithm;show the simulation curve,experimental results and the analysed results finally. The results show that the module has brief structure, strong stability and sensitive response . Within the temperature range from 13 ℃ to 50 ℃,the controlling precision of the module comes up to ±0.05 ℃.