It is normal to see no heart tube beats at six weeks, you can check again in two or three weeks, if it still does not appear, you should consider that the embryo may have stopped developing. Cardiac pulsation refers to the beating of the fetal heart. Generally speaking, cardiac pulsation occurs at six weeks of pregnancy, but the exact time of its appearance may be related to the early or late ovulation and the formation of the fertilized egg, and is usually no later than eight weeks, so it is normal not to see cardiac pulsation at six weeks, and you can wait for two to three weeks before conducting a recheck. If the heart tube does not beat for a long time, we should consider the possibility that the embryo stops developing, and should carry out timely examination, and if the embryo stops developing, we should terminate the pregnancy in time. In the early stage of pregnancy, you can follow the doctor’s advice to supplement vitamins and folic acid appropriately, pay attention to rest, avoid exertion, and carry out regular obstetric examination to ensure the normal development of the fetus. During pregnancy, pregnant women should pay attention to the prenatal examination, actively listen to the advice of professional doctors to do a comprehensive care and health care work, can effectively ensure the safety of the birth. During pregnancy, pay attention to rest more, at the same time should relax, avoid tension, anxiety, any discomfort should be timely to the hospital, the doctor clear diagnosis, and cooperate with the doctor symptomatic treatment.