Bleeding and elevated HCG values after a biochemical pregnancy may be normal, or it may be a secondary trophoblastic disease after a biochemical pregnancy, and it is also important to be alert to the fact that it is not a biochemical pregnancy but an ectopic pregnancy. HCG values tend to increase after pregnancy, and the occurrence of biochemical pregnancy may cause hormonal indicators to be unable to make timely adjustments, resulting in elevated HCG values. Generally with the advancement of time, HCG values will return to normal, no special treatment is needed, observation is sufficient. In biochemical pregnancies with secondary trophoblastic diseases, HCG values may be elevated on the basis of vaginal bleeding, and the values are usually significantly elevated. Ultrasonography and HCG monitoring are needed to determine this. In addition, ectopic pregnancies can also present with elevated HCG values and bleeding, which require blood tests for HCG and ultrasound to confirm the diagnosis.