Abstract: Identification condition in the drilling hole according to surface drilling parameters is an effective way to reduce accident in drilling hole. The paper, based on the traditional hole condition recognition technology, extracts the characteristic information of condition mutations in drilling hole by wavelet analysis, and maps changes in the slope of its reference to the typical identification condition table, and quickly identifies the current operating conditions, and forms the hole working conditions identification quickly. Finally, it validated that the technology can effectively and accurately identify the typical conditions in the drilling hole by CUG-2 drilling monitor acquisition parameters of signal analysis.