Pregnancy chest pain cannot indicate that the embryo is well developed. The main reason for breast pain in pregnancy is that the level of estrogen and progesterone in the body rises, and there are estrogen and progesterone receptors on the mammary glands, leading to the proliferation of mammary glands and ducts, and the enlargement of the breasts, in preparation for postpartum lactation, which may cause symptoms of breast pain and is a normal phenomenon. In addition, chest pain may be caused by cardiopulmonary diseases, etc., which should be treated in time so as not to affect the growth and development of the fetus due to the pregnant woman’s own physical illness. Whether the embryo is developing well or not should be determined according to the parameters of intrauterine growth and development, which are generally based on the length of the fetus, vertex-hip length, weight and other indicators to comprehensively assess the development of the embryo. In addition, the placenta also plays a normal role in maintaining fetal growth and development, and a well-functioning placenta also provides evidence of good intrauterine fetal growth and development. Clinical chest pain in pregnancy should go to the hospital in a timely manner, complete the examination, clarify the cause of the disease and then give targeted treatment.