Pregnant women always have diarrhea may be caused by hormonal changes in early pregnancy, but also may be caused by poor diet, gastroenteritis and other factors, you should consult a doctor in time to find out the cause. 1. Hormonal changes in early pregnancy: common in early pregnancy, hormonal changes in the pregnant woman’s body, affecting the normal peristalsis and emptying of the gastrointestinal tract, there may be intestinal peristalsis or mild indigestion, which can cause diarrhea symptoms. 2. Dietary impurity: for example, eating food of unknown origin, or consuming food that has been stored for a long time and not adequately heated, or not separating raw and cooked food during the processing of ingredients, all of which can lead to diarrhea. 3. Gastroenteritis: pregnant women suffering from infectious or non-infectious gastroenteritis can also lead to frequent diarrhea, often accompanied by epigastric pain, abdominal distension, nausea, vomiting or postprandial fullness, lack of appetite, acidity and other indigestion symptoms. But do not rule out other factors, if the pregnant woman to rule out hormonal changes caused by early pregnancy, need to go to the hospital in time to find out the cause, the doctor to give the corresponding measures.