A gestational sac of 0.7 x 0.6 centimeters is generally considered to be around 5 weeks of pregnancy. The gestational sac belongs to the primordial placental tissue and is also a form during pregnancy before the fetus is formed, and it is mainly detected by ultrasound. Generally, clinically, a gestational sac of 0.7×0.6 centimeters is considered to be about 5 weeks of pregnancy, but there may be slight individual variability related to the time of conception, the nutritional status of the body, and other factors. Under normal circumstances, the gestational sac will only be present in the early stages of pregnancy, usually located in the anterior, posterior or upper uterine wall, etc., with a morphology resembling an oval or round shape. If the location and morphology of the gestational sac are found to be abnormal and accompanied by discomfort such as abdominal pain, vaginal bleeding, etc., then it is necessary to consider that the pregnancy may be a miscarriage. All in all, women need to strengthen their daily life management during pregnancy, go to the hospital for pregnancy test on time, and actively cooperate with the doctor in case of any abnormalities.