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Association of early menopause with increased risk of cardiovascular events has been confirmed in previous studies. SYNTAX score (SX-score) can comprehensively quantify severity of coronary artery disease (CAD) and predict the outcomes of patients with CAD. However, the association of early menopause with SX-score has never been reported.We prospectively included 1875 consecutive postmenopausal patients who underwent coronary angiography (CAG) and were angiographically diagnosed with CAD from January 2011 to December 2013. SX-score was calculated using the SX-score algorithm based on diagnostic angiogram. Ordinal logistic regression analysis was used to investigate the association between early menopause and SX-score.Patients with early menopause were more likely to have a history of hypertension, diabetes, hyperlipidemia, and less likely to smoking. Besides, they have higher fasting glucose, hemoglobin A1C (HbA1c), total cholesterol (TC), low-density lipoprotein (LDL), triglyceride (TG), and body mass index (BMI) compared with the patients without early menopause. Moreover, patients with early menopause have higher SX-score and multi-vessel diseases. Ordinal logistic regression analysis showed that age, hypertension, diabetes, and early menopause exerted independent influences on SX-score. The patients undergone oophorectomy, early menopause was highly associated with SX-score.Early menopause was an independent predictor of SX-score in postmenopausal patients with CAD.