The increasing number of calcified foci in the abdominal cavity of the fetus may be related to the abnormal development of the fetal intestinal tube, intrauterine infection and other reasons, which need to be analyzed specifically. 1. Abnormal development of fetal intestinal tube: due to abnormal development of fetal intestinal tube, it may cause perforation of intestinal tract and entry of meconium into the abdominal cavity, which will cause more and more calcified foci in fetal abdominal cavity. 2. Intrauterine infection: if the intrauterine infection is not controlled in time, the fetus will be infected, resulting in more and more calcified foci in the fetal abdomen. It is recommended to do viral sequence examination to investigate the cause of infection and treat the symptoms. There may be other reasons for the increasing number of calcified foci in the abdomen of the fetus, it is recommended to go to the hospital for regular checkups to clarify the cause of the disease and then treat the symptoms.