Generally speaking, normal fetus will not have fracture in the uterine cavity. Besides the fat layer of the pregnant woman’s body, the fetus also has uterine amniotic fluid as well as fetal membranes as protection, which plays a cushioning role, and it is rare for the fetus to have a fracture in the uterus. Fetal intrauterine fractures usually occur because the fetus is too large or a part of the limb is continuously compressed, or the fetus has osteogenesis imperfecta, the pregnant woman will have fetal movement abnormalities, such as too much or too little fetal movement, and even accompanied by abdominal pain symptoms. In most cases, intrauterine fracture occurs due to osteogenesis imperfecta, in which the bones of the fetus do not develop and grow effectively during development.