The Cardiovascular Disease Branch of the Chinese Medical Association has released the Guidelines for the management of non-ST elevation acute coronary syndromes.Based on the 2016 guidelines,the new guidelines refer to the latest evidence-based medicine and international guidelines,and combine China's national conditions and clinical practice experience to make the latest recommendations for the management of non-ST ele-vation acute coronary syndrome(NSTE-ACS).This article interprets the important recommendations and updates of the guidelines one by one,in order to provide assistance for the clinical diagnosis and treatment of NSTE-ACS.