Multiple uterine fibroids occurring in one uterus at the same time is called multiple fibroids. The causes of the disease are not yet fully understood, but may be related to the following factors: 1, excessive estrogen, it is believed that fibroids are related to female estrogen, women with high estrogen in their bodies are the high incidence of fibroids, women before menarche and after menopause are not prone to fibroids. 2, high stress, if life and work are stressful, and it is difficult to adjust the mentality and physical strength, it is also a cause of fibroids.