When the ultrasound shows irregular shape of the pregnancy sac at 6-7 weeks of pregnancy, most of them suggest that the tension of the pregnancy sac is not good, there are more reasons for the irregularity of the pregnancy sac, mainly including the following: 1, there is a mistake in the calculation of the days of conception: it may be due to the delayed menstruation of the pregnant woman and the wrong ovulation period, resulting in the late conception time, thus the pregnancy sac is smaller than the actual number of days of menopause, and the irregular shape of the pregnancy sac will appear on the ultrasound examination, it is suggested that 1-2 It is recommended to recheck after 1-2 weeks; 2. ultrasound examination error: when holding urine for ultrasound examination, the bladder presses to the uterus causing changes in the shape of the pregnancy sac, and the result can be confirmed by repeating the examination; 3. embryo abnormality: when there are genetic defects in both parents, resulting in abnormal development of the embryo itself, embryonic abortion, or radiation exposure or chemical poisoning, it can lead to embryo abnormality or even stillbirth, and the feedback to the ultrasound examination will appear Irregular shape of the gestational sac. The pregnancy can be terminated by amniocentesis as well as rechecking the color ultrasound to clarify whether there is any embryonic abnormality, and if it exists, the pregnancy can be terminated by abortion surgery; 4. Maternal factors: if the mother has folic acid deficiency, luteal insufficiency, or infection with mycoplasma, chlamydia, or rubella virus during pregnancy, and the ultrasound examination reveals irregular shape of the pregnancy sac, the pregnancy can be preserved according to the embryonic development and follow the doctor’s recommendation If the ultrasound examination reveals that the shape of the gestational sac is irregular, you can follow the doctor’s recommendation for fetal preservation or abortion according to the embryonic development. If the ultrasound examination at 6-7 weeks indicates that the shape of the gestational sac is irregular, we should not only look at the ultrasound results, but also analyze and judge the changes in the values of progesterone and human chorionic gonadotropin (HCG), as well as the presence of yolk sac, fetal bud, fetal heart, etc. If the shape of the gestational sac is irregular, but the fetal bud, fetal heart and progesterone are normal, the pregnancy is normal in utero and there is no need to worry too much. If the yolk sac is not present in the ultrasound at 10 days interval, and no fetal bud appears afterwards, as well as the HCG value doubles poorly or shows a decreasing trend, it is more likely that the embryo stops developing, and it is recommended to terminate the pregnancy in time.