Abstract: This paper introduces the premining detection and evaluation techniques of mining geological conditions of little distance coal-seam group in the case of the second and third mining areas of Qianjiaying mine field,Kailuan.That is a three-in-one combination of exploration techniques by in-mine comprehensive seismic exploration （2D seismic survey,Rayleigh wave and in-seam seismic）,in-mine drilling and comprehensive geological evaluation.The feasibility,necessity and advanced property of this technology are discussed.