Teratomas are not their own siblings, teratomas originate from the primitive germ cells of the embryonic gonads and are germ cell tumors. Teratomas are germ cell tumors, mostly occurring in the ovaries, testes, etc. Symptoms include abdominal pain, testicular pain, constipation, etc. Teratomas can be divided into mature (benign) teratomas and immature (malignant) teratomas according to the degree of tissue differentiation. The pathogenesis of teratoma is not clear at present, and it is considered to be related to family history and congenital defects of the genitals, but not related to siblings, and it is not the siblings who appear in the body. Clinical risk factors for teratoma include a family history of genetic disorders, congenital defects of the central nervous system, genitalia, and lower spine, and the presence of hereditary diseases. The prognosis for benign teratomas is good, and the five-year survival rate for malignant teratomas is greater than 85%. Therefore, patients diagnosed with teratoma should be actively specialized for standardized treatment and regular follow-up.