As　a　new　non-stationary　signal　processing　method,　the　intrinsic　time-scale　decomposition　(ITD)　method　can　be　used　to　decompose　a　complex　non-stationary　signal　into　several　proper　rotation　components　(PRCs),　but　there　exist　serious　end　effects　in　some　PRCs.　Here,　5　end　effect-mitigation　methods　to　deal　with　end　effects　were　proposed　including　adaptive,　AR　prediction　extending　method,　mirror　extrema　extending,　polynomial　fitting　extending　method　and　anti-symmetric　period　extension　method.　The　end　effect-restrained　results　with　5　methods　were　compared　with　numerical　simulations.　The　best　one　was　applied　to　analyze　simulated　signals　and　bearing　fault　vibration　signals,　the　results　showed　that　the　proposed　method　can　be　used　to　solve　the　end　effect　problems　effectively　and　to　extract　fault　features　of　mechanical　equipments　better.