The　electro-hydraulic　servo　loading　system　was　applied　to　make　cyclic　loading　tests　for　fractured　rock-like　specimens.　According　to　the　results　of　the　fatigue　test,　the　power　function　model　was　used　to　fit　and　analyze　the　test　data　and　the　fitting　degree　of　the　curve　was　determined　by　the　correlation　coefficient.　and　the　result　was　fitted　well.　The　main　factors　influencing　the　fatigue　life　of　specimens　were　analyzed.　The　upper　limit　stress　was　the　most　important　factor　affecting　the　fatigue　life　of　specimens.　Under　the　same　conditions,　the　specimen　had　a　shorter　fatigue　life　when　being　applied　by　higher　upper　limit　stress;　the　rock　of　different　types　and　strengths　not　only　had　different　fatigue　life,　but　also　had　the　different　sensitive　degrees　between　the　fatigue　life　and　the　upper　limit　stress;　the　fatigue　life　of　specimens　was　significantly　influenced　due　to　different　initial　damages.