The Gui Zhi Fu Ling here should be Gui Zhi Fu Ling Pills, which can alleviate the symptoms of endometrial thickening, but not necessarily cure endometrial thickening. Gui Zhi Fu Ling Pill contains Gui Zhi, Poria, Paeonia lactiflora, Peach Kernel, Mudan Pi and other traditional Chinese medicines, has the effect of activating blood circulation, resolving blood stasis, eliminating symptoms, and it can be used to treat women with persistent masses (i.e., intra-abdominal masses), or blood stasis and menstrual closure, menstrual cramps, postpartum menstrual pain, and post-partum menstrual discharge, which can have a certain effect on the symptoms of thickening of the lining of the uterus due to blood stasis. In addition, Gui Zhi Fu Ling Wan is contraindicated in pregnant women, and the adverse effects of taking this product are not clear. Those who are diagnosed with endometrial thickening should take Gui Zhi Fu Ling Pill under the guidance of physician according to their specific symptoms and should not take Gui Zhi Fu Ling Pill blindly.