Abstract: To study the relation between therupture risk degree of the surrounding-rock and the engineering geologicalcondition, the stress function of the roadway surrounding rock isobtained byusing the complex function theory of elastic-plastic mechanics in this paper,then the rupture mechanism of the high stress roadway is studied. Itis shown that the risk degree of the surrounding-rock and the slipdistribution when the roadway bursts can be determined by a function ofdanger, which is a practical control technology of the extractionroadway with advantages of being used widely and calculated simply.