The technique of the sclerotherapy for hemorrhoid treatment was introduced in the late 19th century. The sclerotherapy is a simple method with lesser pain or complication, in case of being operated with an exact indication. But the fact is that this sclerotherapy is used imprudently and secretly by quack, owing to misunderstanding of its simplicity. This thesis is a clinical analysis of 575 patients who were diagnosed hemorrhoids, anal stenosis, anal incontinence and admitted from Jan. 1994 to Dec. 1995. 99 patients(17.1%) of them were taken sclerotherapy Previously The Peak incidence was in the 4th decade of male(41.8%) and the 5th decade of female(40.6%). From five to ten years of the time lapse between onset of symptoms and admission was 27.3% and it appeared most frequently. It seems that the incompleteness of the first treatment cased the extension of illness period to the patients. The most frequent complaint was prolapse(72.7%). The 3rd and 4th degree of hemorrhoid were 58.5%. Combined diseases were anal stenosis(22.2%), fissure and skin tag(16.1%), and rectocele(11.1%). Owing to incompleteness of the sclerotherapy, the degree and symptoms of hemorrhoids were more severe than the general hemorrhoids and combined diseases also were more complicated. So conservative treatment and non-surgical treatment were impossible, and Left lateral internal sphinterotomy, rectopexcy, anoplasty, fistulotomy, sphinteroplasty, colostomy with hemorrhoidectomy performed. but the treatment itself was more complex and difficult. In conclusion, it is thought that the national and positive medical education about hemorrhoids and the controls about the abnormal treatment are needed.