Small red rashes on the pregnant stomach may be caused by mosquito bites, skin pulling, skin allergy, biliousness, etc. You should go to the hospital in time to clarify the cause. 1. mosquito bites: red spots on the stomach may be caused by mosquito bites, especially in the summer mosquitoes, pregnant women need to pay attention to anti-mosquito. 2. Skin pulling: the growth and development of the fetus will cause pulling on the abdominal skin, resulting in red spots on the stomach, further development may lead to stretch marks, you can apply appropriate amount of moisturizing oil. 3. Skin allergies: due to changes in hormone levels in the body during pregnancy, the body’s resistance may be reduced, at this time, if there are allergic factors to stimulate the skin, can cause pimples, eczema and so on. Pregnant women need to avoid allergens, and timely access to medical care, follow the doctor’s instructions for treatment, not to use their own drugs to avoid adverse effects on the fetus. 4. Cholestasis: Cholestasis is common in the middle and late stages of pregnancy, due to the increased burden on the liver during pregnancy, the excretion of bile acids decreases, manifesting itself as red spots on the stomach accompanied by localized itchy symptoms, and even yellowing of the skin, which in severe cases can lead to the death of the fetus. Small red rashes on the belly of pregnancy may also have other causes.