The conformal transformation and elastic theory of complex function are used to derive the analytical expression of surrounding rock stress distribution of vertical wall archy roadway. The distribution laws of roadway boundary surrounding rock stress and the stress along horizontal line are analyzed. Also the impact of different aspect ratios of roadway cross-section and different lateral pressure coefficients on stress field of surrounding rocks are studied. The results showe that: with different aspect ratios of roadway cross-section and different lateral pressure coefficients, three locations of vertical wall archy roadway surrounding rocks are main stress concentration area concentrated . The three locations are the basic angle at bottom of vertical wall,the location near midpoint of archy roof and the center of floor. Under different aspect ratios of roadway cross-section, the distribution laws of stress along horizontal line of vertical wall archy roadway are the same basically. When the lateral pressure coefficient is greater than one, roadway is stable with aspect ratio of roadway cross-section less than one. While,when the lateral pressure coefficient is not greater than 1,roadway is stable with aspect ratio of roadway cross-section greater than one.