Cystic cavity may be caused by follicles, fertilized eggs, cysts, etc. If there is a cystic cavity in the uterus through ultrasound examination, consider it to be a gestational sac, which will enter the uterine cavity around 40 days of pregnancy and can be confirmed through ultrasound examination. If there are multiple cysts on the ovaries, consider polycystic ovaries. It is best to further check the hormone six items to confirm the diagnosis, because polycystic ovaries are caused by endocrine disorders and need to be treated with Da-Ying-35, and it is recommended to use ovulation-promoting drugs under the guidance of a doctor. If the ovarian cyst disappears with the change of menstrual cycle, it is best to surgically remove the pathological cysts that have not disappeared, and it is best to determine the pregnancy sac without worrying, and it is best to review the ultrasound on the 50th day of pregnancy to see if there is a fetal heart and fetal buds.