The selection of bolt support theory directly influences the surrounding rock support effect.Since the surrounding rocks are broken in Jinfeng Gold Mine,the loose circle test was carried out.According to the test results,the build-up arch theory was decided to be the bolt support calculation theory for Jinfeng Gold Mine,the roadway support parameter in Jinfeng Gold Mine are decided by calculation,field support test was carried out,the bolt stress conditions were monitored simultaneously and the optimum roadway support parameters in Jinfeng Gold Mine were decided as follows:the interval of bolts is 1.2 m,the row interval is 1.2 m,the bolt length is 2.4 m.Engineering practice shows that the determination of bolt support calculation theory by loose circle size can make the selected support theory more practical to the mine,and has guiding significance for the bolt support parameter design in other countries.