The effective support of roadway in fault breaking area is of great significance for coal mine safety production. Shanxi Qinhe Energy Group Jiuxin Coal Industry Co., Ltd .205 working face transportation and return air roadway fault as the test object. The analysis method is used to analyze the cross fault of working face transportation and return air roadway. The combined support method of roof grouting treatment, pre-grouting of broken surrounding rock and anchor cable net in caving area is put forward and the deformation of roadway surrounding rock after supporting is monitored. The monitoring results show that the roof subsidence of roadway is 60 mm、 the bottom bulge is 50 mm and 81 mm, the deformation of roadway is less, and the roadway is effectively controlled.