Amniotic fluid depth, also known as maximum amniotic fluid depth, is the value of the depth of the deepest part of the amniotic cavity within the amniotic cavity measured during ultrasound during pregnancy, which is used to assess the amount of amniotic fluid, and the normal range of the depth of amniotic fluid during pregnancy is between 3-8cm. Amniotic fluid is an appendage of the fetus that provides space for fetal growth and development and fetal activity. The amount of amniotic fluid must be kept generally within the normal range during pregnancy, and the assessment of the amount of amniotic fluid consists mainly of the depth of the amniotic fluid. Since 12 weeks of pregnancy is in the early stages of pregnancy, amniotic fluid is just beginning to develop and be produced and the overall volume is relatively low. Regular checkups are recommended during pregnancy. If you have any discomfort such as abdominal pain or vaginal bleeding and fluid, it is recommended that you seek medical attention in a timely manner, and under your doctor’s guidance, complete the relevant examinations to clarify the cause of the disease and treat the symptoms.