The main reason why uterine fibroids do not get smaller in clinical practice is because they are estrogen-dependent tumors. In clinical practice, as long as the ovaries function normally and secrete estrogen periodically, uterine fibroids will have the conditions to survive. The treatment of uterine fibroids by taking Gui Zhi Fu Ling Capsules is only to inhibit the growth rate of fibroids and slow down the growth rate of fibroids to achieve the treatment purpose in clinical practice. Only after menopause, the ovarian function declines, estrogen declines, fibroids will appear to shrink or even disappear. Therefore, during the treatment of fibroids with Gui Zhi Fu Ling Capsules, it is important to review the ultrasound regularly to know the size of fibroids and whether more fibroids have grown.