Whether ovarian solid occupancy is serious or not cannot be generalized. Ovarian solid occupancy may be caused by mature teratoma, which is not serious, but it may also be caused by ovarian cancer, which is more serious. 1. mature teratoma: mature teratoma is a kind of tumor originated from germ cells, which belongs to benign tumors, this disease can also lead to solid ovarian occupancy found in patients’ examination, patients can have abdominal pain, abdominal mass and other symptoms, usually the prognosis is good after surgical treatment. 2. Ovarian cancer: Ovarian cancer is a kind of malignant tumor occurring in ovary, which can also lead to the discovery of ovarian solid occupancy in patients’ examination, and the disease is hard to be cured, but the earlier the stage is, the better the treatment effect is, and the higher the five-year survival rate is. If solid ovarian cancer is found, please follow the doctor’s instruction to improve the follow-up examination and treatment.