Cloudy amniotic fluid may be caused by fetal fat shedding, fetal hypoxia, infection and other reasons. 1. Shedding of fetal fat: the fetal fat on the skin surface of the fetus is shed in late pregnancy, which may cause the amniotic fluid to become cloudy when mixed with the amniotic fluid, in which case the fetal heartbeat is usually normal, and it is enough to pay attention to the regular delivery checkups. 2. Fetal hypoxia: When hypoxia is caused by factors such as umbilical cord entanglement, umbilical cord knotting, hypertension during pregnancy, etc., it may lead to weakening of fetal gastrointestinal blood supply, resulting in spasm of the intestinal wall, relaxation of anal sphincter, and evacuation of fecal matter into the amniotic fluid, resulting in the appearance of cloudy amniotic fluid. 3. Infection: When pathogenic microorganisms enter the amniotic cavity and cause infections of the amniotic fluid, fetal membranes and placenta during pregnancy and labor, the amniotic fluid may become cloudy. It is recommended that pregnant women seek timely medical examination to identify the cause of the disease and then carry out targeted treatment, pay attention to personal hygiene in life, develop good hygiene habits, wash their hands and take a bath, avoid strenuous exercise and overwork, and carry out maternity checkups on time.