Abstract: The location service of fully-mechanized mining face is great sigificance for the itlligent mining of coal mines. The existing mine positioning methods and techniques have large positioning errors in non-line-of- -sight scenes, and it is difficult to meet the needs of location service and safety of fully - mechanized mining face. In order to solve the problem of equipment safety and personnel safety in location service and safety of fully - mechanized mining face. In order to solve the problem of equipment safety and personnel safety in fully - mechanized coal mining face, from the view of reducing the UWB signal ranging, reflection, diffraction and occlusion under the complex environment of fully- mechanized coal mining face, such as support, conveyor and shearer, Based on the impulse signal model and UWB distance measurement principle , combining with the conditions of working face, the signal transmission model is studied, and the characteristic due to multipath and other factors in the transmission process are analyzed. The main influencing factors of the UWB communication in the fully-mechanized mining face are obtained. Based on the above factors, the communication parameters are optimized on the DW 1000 platform.The test data show that the UW B ranging error can be controlled within 50 cm, which can meet the basie require-on the DW 1000 platform.The test data show that the UWB ranging error can be controlled within 50 cm, which can meet the basie requirements of equipment and personnel positioning.