The invention provides a power disaster early warning method based on roadway surrounding rock fracture auxiliary hole monitoring, and belongs to the technical field of mining engineering and geotechnical engineering power disaster monitoring and early warning. According to the method, through the arrangement and distribution of auxiliary holes, the roadway surrounding rock fracturing process in the power disaster inoculation and evolution process is shown on the periphery of the auxiliary holes; by using a mode of forming monitoring holes and installing sensors in the monitoring holes, the effective signal attenuation and the construction noise interference are reduced; the hole wall surrounding rock micro fracturing state of the auxiliary holes is directly monitored; the power disaster is monitored in real time. The method overcomes the defect of low accuracy of the monitoring result caused by complicated operation and real-time monitoring incapability of a chip drilling method (performing early warning by aiming at coal mine impact ground pressure) and weak effective signal and strong noise interference of a sound emitting method. The safety and the effectiveness of the mining engineering and geotechnical engineering power disaster monitoring are improved.