Constipation is a common but intractable disorder.Constipation cannot be treated by purging only,but on its etiology.Four proven cases were listed.

• 便秘是临床常见证,亦可为沉疴痼疾,诊治便秘不可一味泻下,应“究源”论治。结合临证验案四则,予以阐述。