The phenyl in aramid fiber is very difficult to dissolve in most of the chemical substances,so bonding effects of adhesives and selflubricating liner weaved by aramid fiber and PTFE fabric are inferior,which affects the whole performance of selflubricating spherical plain bearings.The liners of selflubricating spherical plain bearings were modified by glycerin ether,the tribological properties of the bearings with glycerin ether modified liner were tested on the tribological dynamic performance tester,and the wear mechanisms of modified fabric liner were also analyzed.The results show that the friction coefficient,wear loss and friction temperature of the bearings of modified liner are lower than those of the bearings of unmodified liner.The film forming capability of the fabric liners is improved after modified by glycerin ether,and with the increasing of swing frequency,the film forming capability of modified fabric liners is also improved,indicating that the tribological properties of selflubricating spherical plain bearings are improved by glycerin ether modified liner.