18 weeks of pregnancy when the normal number of fetal movements for 3 to 5 times per hour or 12 hours not less than 10 times, if more than the above range of pregnant women fetal movement is very frequent, generally not normal, but may also be due to the baby is very lively and active caused by this time is mostly normal phenomenon. Because in the 18th week of pregnancy, the fetus has been basically developed, but at this time due to the fetus is small, usually mostly in the sleep, less activity. Therefore, the general fetal movement is less, the intensity is also weaker, it is not easy to feel the obvious fetal movement. Therefore, it may not be normal for pregnant women to feel frequent fetal movements at 18 weeks of pregnancy. If the baby itself is very active, it is easy to feel obvious fetal movement, this may also be a normal phenomenon, if this phenomenon often occurs, it is recommended to consult a doctor in time. It should be noted that if the frequent fetal movement is accompanied by severe abdominal pain, lower abdominal distension, vaginal bleeding and other symptoms, it is recommended to consult a doctor to clarify the cause of the problem, and follow-up treatment under the guidance of the doctor.