An ultrasound at nine weeks of pregnancy will show the gestational sac and its size, the buds and the fetal heart, but what is seen is limited due to the short period of fetal development. Usually, the gestational sac appears around 30-40 days of fetal development, the buds form around 40-50 days of fetal development, and the heart forms around 50-60 days of fetal development. So at nine weeks of pregnancy, which is around 36 days of pregnancy, ultrasound can see if the gestational sac is in the uterine cavity and also measure the size of the sac, as well as see the size of the fetal buds and hear the heart tube pulsations of the fetal heart. Pregnant women should eat more food rich in protein during pregnancy, such as eggs, lean pork, soy products, milk and so on. It is also necessary to appropriate supplement shrimp, fish, pork liver, oats, walnuts, peanuts and other foods, eat more fresh vegetables and fruits, to ensure that the intake of food nutritionally balanced, to avoid a single nutritional Pregnant women during pregnancy should pay attention to do a good job of prenatal checkups, actively listen to the advice of professional doctors to do a good job of comprehensive care and health care, pay attention to rest, at the same time, should relax, avoid tension, anxiety, any discomfort should be timely to the hospital, the doctor to clarify the diagnosis, and cooperate with the doctor to deal with the symptoms.