Abstract: According to clinical advantages showed in deep-needling eight liao points to treat pelvic floor diseases in recent years， difficult issues of eight liao points in locating and deep-needling are analyzed. It points out re-understanding eight Liao points， including their clinical effects and key techniques in manipulation. It introduces location method of eight liao points and points out that eight liao points having different needling angles is the key to make head of needle enter posterior sacral foramina smoothly when deep needling eight liao points.