Abstract: Real?time micro?seismic wave monitoring technology for artificial cracks in the process of hydraulic fracturing was applied to the Carboniferous volcanic reservoir with low permeability in southern District?9 in Karamay oilfield, the information such as orientation,length, height, occurrence and maximum principal stress direction of artificial fractures in fracturing intervals can be finally determined by building up database of geophysics, rock mechanics, reservoir reformation and micro?seismic wave signal, etc., integrated with a series of interpretation and processing of the cracks and fractures, based on regional structure, reservoir property and fracturing parameters, so as to provide scientific basis for optimizing such reservoir hydraulic fracturing parameters and designing next development scheme