In order to improve the efficiency of heading advance in Kafang Mine,Based on the investigation of working procedures of heading advance in Kafang Mine,the time need by each working procedure of heading advance is analyzed using Laplace's principle-of-insufficient-reason criterion,the main factors affecting the efficiency of heading advance are fount out,they are drilling and blasting and muck removing.Through improving the pattern of borehole layout and explosive charge of borehole,the purpose of improving efficiency of heading advance has been reached.