AMH, clinically known as Anti-Müllerian Hormone, is a blood test to check a woman’s ovarian reserve function, follicle count, and can provide a basis for the diagnosis of a number of diseases. Anti-Müllerian hormone is a glycoprotein hormone secreted by female follicular granulosa cells and male testicular support cells. A decrease in serum anti-Müllerian hormone is generally indicative of a decrease in ovarian reserve function, which can lead to premature depletion of the basal follicular pool, and can be used to predict a woman’s infertility and is a basis for determining ovarian reserve function. In addition, elevated anti-Müllerian hormone can provide a diagnostic basis for diseases such as polycystic ovary syndrome and ovarian granulosa cell tumor. In patients with ovarian granulosa cell tumors, the level may return to normal after surgery. Re-elevation of AMH levels on follow-up is associated with tumor recurrence, which usually precedes clinical symptoms and requires diagnosis by a specialized physician. The results of anti-Müllerian hormone tests should be judged by a specialized clinical physician in combination with clinical history, symptoms, signs and other auxiliary tests.