Choriocarcinoma is one of the many types of cancer, and it is a rare clinical condition that is a type of trophoblastic tumor in pregnancy, mostly occurring in gravid pregnancies. Although choriocarcinoma is also a type of malignant tumor, its incidence is quite low, but the risk is very serious. Choriocarcinoma is usually secondary to a gravid pregnancy, but it can also be secondary to other diseases. It is highly malignant and metastasizes rapidly, and if not treated and controlled in time, it can lead to death within a short time. Choriocarcinoma is usually located in the myometrium and may develop singly or in combination with other tissues. The texture of choriocarcinoma is usually soft and dark red in color, accompanied by obvious necrotic bleeding tissue. In conclusion, although the incidence of choriocarcinoma is not very high, the mortality rate of choriocarcinoma is quite high, so once diagnosed, timely treatment is essential.