肛直肠运动性疾患导致的排便异常主要表现为慢性功能性便秘(chronic functional constipation,CFC)。人口统计学资料表明,20%以上的人患有便秘,而半数以上为功能性排便障碍~([1]);其中症状重且持续,严重影响工作和生活的,称重度功能性便秘(severe functional constipation,SFC)~([2]),SFC在慢性便秘中占53%~62.1%~([3-4])。生物反馈训练为功能性排便障碍的二级治疗方法 ,但尚有部分疗效欠佳,可能与肌电目标P值的选择有关~([2])。因此,我们对180例SFC患者进行直肠 Anorectal motility disorders caused by defecation mainly as chronic functional constipation (chronic functional constipation, CFC). Demographic data indicate that more than 20% suffer from constipation and more than half are functional defecation disorders ([1]); those with severe and persistent symptoms that seriously affect work and life, Functional constipation, SFC) ~ ([2]), SFC accounted for 53% ~ 62.1% ~ ([3-4]) of chronic constipation. Biofeedback training is a secondary treatment of functional defecation disorder, but there are still some poor efficacy, which may be related to the selection of the myoelectricity target P value ([2]). Therefore, we performed rectal on 180 patients with SFC