The echogenicity in the uterine cavity is not necessarily ectopic pregnancy, but the echogenicity in the uterine cavity is considered in the following two cases: 1) a small echogenic zone can be seen in the uterine cavity in early pregnancy, and as the gestational week increases the echogenic zone forms a gestational sac and then a fetal bud. 2) ectopic pregnancy, which is usually accompanied by a small amount of bleeding and a small echogenic zone can be seen in the uterine cavity, is considered to be formed by blood aggregation and is mostly accompanied by pain in one side of the lower abdomen, and the ultrasound The ultrasound may indicate a mixed type of mass in the adnexal area, and the change in blood HCG should be combined to determine whether the pregnancy is intrauterine or ectopic. If the blood HCG doubles badly on continuous review, it is considered ectopic pregnancy and needs to be reviewed regularly; if the blood HCG doubles well, it is considered intrauterine pregnancy; when the blood HCG doubles badly, it needs to be reviewed regularly and if necessary, medication or surgery is needed.