In recent years, medical technology has been breaking through new treatment bottlenecks, which has greatly improved the cure rate of many cancers, and today we are talking about “choriocarcinoma”. Choriocarcinoma of pregnancy is a highly malignant tumor that can metastasize to the whole body through bloodstream in the early stage, most commonly in the lung, vagina, brain and liver, causing destruction of the tissue organ and causing hemorrhage and necrosis. Approximately 50% of cases are secondary to gravidity (more than 1 year after gravidity clearance), the rest are from miscarriage and normal pregnancy, accounting for approximately 25% each, and a few occur after ectopic pregnancy. Trophoblastic tumors secondary to a normal pregnancy must be choriocarcinoma, and never staphyloma or erosive staphyloma. This is why women of childbearing age should be especially aware. The mortality rate of gestational choriocarcinoma was very high in the 1950’s. Although the prognosis of choriocarcinoma has improved significantly with the application of chemotherapy in recent years, the damage caused to women should not be underestimated. Choriocarcinoma is a nightmare for women who want to have children. I. Causing ectopic pregnancy The stimulation of choriocarcinoma will cause edema of fallopian tubes and thinning of mucous membrane, which is not conducive to the union of sperm and egg. Even if the egg is combined, it cannot reach the uterus in time, which may cause ectopic pregnancy and threaten women’s health. The real disastrous consequence of choriocarcinoma is that the ovaries cannot perform their normal physiological functions. However, ovaries not only bear the important task of producing eggs and combining with sperm to create the continuation of human history, but also bear the secretion of estrogen, progesterone and androgen, which are unique to women and support the secondary sexual characteristics of women; make the breasts hyperactive, uplifting and the uterus vibrant; make the skin tender and delicate, with soft and charming lines. Choriocarcinoma can not only make women infertility and weakened secondary sex characteristics, but also directly cause endocrine disorders, resulting in premature skin aging and stealing the beauty of women. Choriocarcinoma can be infected in various ways, such as through the adjacent organs, such as appendix. Sexual contact and lack of hygiene can also cause choriocarcinoma. Women should pay attention to this, especially married women. Although unmarried women have more barriers to resist germs than married women, because of the many ways of infection, unmarried women may also be infected. If not treated in time, it may turn into chronic choriocarcinoma, blocking the fallopian tubes and leading to ectopic pregnancy or infertility, causing lifelong regret. Women who have ever been pregnant must know how to observe their own physiology. Any gravida, irregular vaginal bleeding after delivery or miscarriage, uterus that cannot be restored as expected, large and soft, should think of the possibility of choriocarcinoma. The clinical symptoms of choriocarcinoma are as follows: 1. Vaginal bleeding: after delivery, after miscarriage, especially after clearing the uterus of gravida, there is irregular bleeding with variable amount. If choriocarcinoma has invaded the uterine wall but the endometrial lesion is mild, there may be no vaginal bleeding. 2.Abdominal mass: Due to the formation of hematoma in enlarged uterus or broad ligament, or enlarged yellow cyst, patients often complain of lower abdominal mass. 3.Abdominal pain: It is caused by the erosion of uterine wall or accumulation of blood in uterine cavity by cancerous tissues, and it can also be caused by the metastasis of cancerous tissues through uterus or internal organs. 4.Metastasis symptoms: Trophoblast cells of choriocarcinoma first invade into the veins of parametrial tissues, and then migrate retrograde to the vagina, upstream through the right heart to the lung, and then spread to all major organs of the body, such as brain, liver, kidney, gastrointestinal tract, etc. by secondary metastasis from the lung.