正常儿童每日大便次数、量及性状,有较大差异。粪便性状往往受年龄、饮食习惯等因素影响。例如母乳喂养儿每日排便6～8次,并非罕见,且粪质较稀;进食含纤维素较多食物时,小儿便量可较多。因此,单根据便次、便量或其稀稠度,有时难以作为病理性腹泻的可靠指标。如与平时习惯比较,粪便忽然变稀,便量或便次增多,尤能引起脱水、体重丢失或生长发育障碍等后果时,则可认为是病理性腹泻。腹泻迁延不愈,超过多久才能称为慢性腹泻,各家意见不甚统一,但多数将腹泻超过两周称为慢性腹泻或难 Normal children’s daily stool frequency, amount and traits, there is a big difference. Stool traits are often affected by age, eating habits and other factors. For example, breastfeeding children daily defecation 6 to 8 times, not uncommon, and fecal material more dilute; eat more foods containing more cellulose, children can be more amount. Therefore, according to the time and convenience alone or its thin consistency, sometimes difficult as a reliable indicator of pathological diarrhea. If compared with usual habits, feces suddenly thinning, then the amount or will increase, especially can cause dehydration, weight loss or growth and development disorders and other consequences, it can be considered pathological diarrhea. Diarrhea delayed unhealed, how long before they can be called chronic diarrhea, the opinions are not uniform, but most will be more than two weeks of diarrhea known as chronic diarrhea or difficult