Defecate is us after edible food , after be being absorbed through digesting residual , still do not put certainly inside the large intestine after defecate keep have a bowel movement 大便是我们食用食物后，经过消化吸收后的残渣，排便后大肠内不一定还存留大便。
Anal fissure aches continuously , the aggravate when lay a finger on , press press or cough , walk sit stand to all feel disadvantageous , because anal narrow defecate is ok attenuate 肛裂持续疼痛，触碰、受压或咳嗽时加剧，行走坐立均感不便，因肛门变窄大便可以变细。
And , as the accretion of tumor , darling occurrence defecate is difficult , even micturition is very difficult also , companion has serious abdominal distension , bleed in defecate of individual little patient 并且，随着肿瘤的增大，宝宝出现排便困难，甚至排尿也很困难，伴有严重的腹胀，个别患儿大便中出血。
Anus of internal piles emergence has the feeling with straining feeling and endless defecate , can accompany next abdomen bilge painful or lumbar di ministry is blunt painful reach the symptom such as frequent micturition 内痔脱出肛门有下坠感和排便不尽之感，并可伴有下腹部胀痛或腰骶部钝痛及尿频等症状。
The change that defecate is used to often the symptom that colonic cancer appears the earliest , much performance is defecate number increase , diarrhoea , blood , pus is taken in secret , excrement and urine or mucous 排便习惯的改变经常是结肠癌最早出现的症状，多表现为大便次数增多、腹泻、便秘、粪便中带血、脓或粘液。
Bacterial or viral infection of the intestine may result in explosive watery diarrhea , tenesmus ( spasmodic contraction of anal sphincter with pain and persistent desire to defecate ) , and abdominal cramping pain 肠道被细菌或病毒感染，引起暴发性水泻、里急后重（肛门括约肌痉挛性收缩伴疼痛，一直想要排便）及腹部绞痛。
