The most common cause of diarrhea in pregnant women is an intestinal infection, caused by microorganisms such as salmonella, dysentery, viruses and protozoa, etc. In summer, diarrhea should also be thought of as food poisoning. Obviously, diarrhea is not normal for pregnant women, and it may lead to miscarriage or premature birth! Step 1: Don’t eat anything for the time being, make appropriate rehydration, replenish the water and electrolytes lost due to diarrhea, especially potassium ions, and also replenish the lost calories. You can prepare some fluid and easily digestible rice for the pregnant woman, and if it is not very serious, an empty stomach will be fine. While replenishing fluids, closely observe whether the fetus is in good condition and whether there are signs of miscarriage or premature birth. Step 2: If the condition of the fetus is abnormal, you should go to the hospital immediately and should not be careless in order to prevent any delay in the condition leading to miscarriage or preterm delivery. If the possibility of miscarriage or preterm delivery is ruled out, medication can be used carefully according to the degree of diarrhea in pregnant women. A variety of commonly used antibiotics and anti-protozoal drugs, in addition to adverse reactions, some may also lead to fetal malformations. For example, the commonly used metronidazole has teratogenic effects on experimental animals and is therefore prohibited during pregnancy, especially in the first trimester! Other antibacterial drugs, such as sulfonamides, tetracyclines and quinolones, have adverse effects on both the mother and the fetus and should also be prohibited. Do not use opiates to stop diarrhea, as they may cause bacterial overgrowth and repeat infections, which in turn may aggravate the condition. The phenomenon of diarrhea in pregnant women can be solved with more moderate anti-diarrheal agents, such as kaolin, pectin can be used safely, these drugs can absorb water to reduce intestinal peristalsis. Medicinal charcoal tablets may also be worth a try, and Simethicone is also very safe, it is a kind of eight-sided montmorillonite, with a large adsorption surface, not absorbed by the body, can absorb water, it not only has the above characteristics, but also adsorbs some pathogenic bacteria, with anti-diarrheal and antibacterial dual effect, and thus absolutely safe and effective. Generally speaking, erythromycin and ampicillin are safe for both mother and child. Pregnant women can also be given some microecological preparations, such as Rejuveno and Rectify, to adjust the intestinal flora and support the righteousness and dispel the evil. If a pregnant woman who is about to give birth has diarrhea, she should be isolated at the bedside according to intestinal infections to ensure the safety of the baby and other mothers. At this time, you can use penicillin such as ampicillin or vanguardomycin anti-infection treatment, which is safer for both mother and child. After the above treatment, the pregnant woman can usually resume normal bowel movement after 24-96 hours. If diarrhea does not resolve, stool bacteriological culture and drug sensitivity test should be performed, along with intestinal protozoa and parasite examination. Fiberoptic sigmoidoscopy should be performed cautiously if necessary to rule out extranodal inflammatory bowel disease.