Roadway leading influence scope in process of coal production was directly related to safety production and reasonable supporting. In order to determine the 5# coal face in advancing process of roadway leading influence scope, measured method was used in this paper. First of all, concrete parameters and forms of 5# coal seam roadway support were analyzed to ensure reasonable support parameters and safety and stability of  roadway. Then, the field observation scheme of roadway leading influence range was designed and least squares fitting method was used for fitting analysis. The results showed that leading influence range was about 50m, peak value of leading pressure was about 8m in the front of working face and the peak was about 18.6MPa, which was about 3 times than the original rock force.