慢传输型便秘(slowtransitconstipation,STC)是指由于胃肠道传输能力减弱而致的便秘。STC的主要表现为便次减少、腹胀、肠鸣音减少、便意缺乏、大便干燥、排出困难、久蹲难下等症状;肛直肠指检时无粪便或触及坚硬粪质,而肛门外括约肌的缩肛和用力排便功能正常。其检查手段不多, Slow transit constipation (STC) refers to constipation due to decreased ability to transmit gastrointestinal tract. The main manifestations of STC reduce the number of times, abdominal distension, reduced bowel sounds, lack of meaning, dry stools, discharge difficulties, long squat difficulties and other symptoms; anus and rectal examination without excrement or touch hard fecal material, and external anal sphincter Constipation and forced defecation normal. The means of inspection is small,