In 2014, The International Diabetes Federation (IDF), American Diabetes Association (ADA), International Society for Paediatric and Adolescent Diabetes (ISPAD), and Chinese Diabetes Society (CDS) published several guidelines and consensuses in the clinical diagnosis, treatment and comprehensive management of diabetes mellitus. In addition, guidelines and consensuses published by the American Stroke Association (ASA), American National Lipid Association (ANLA), Chinese Society for Metabolic & Bariatric Surgery (CSMB) and European Association for the Study of Obesity (EASO) also included some contents related to the management and control of diabetes mellitus. In order to further strengthen the clinical management and treatment of diabetes mellitus, this paper reviewed the important advantages of clinical practice guidelines and consensuses published in 2014 in the field of diabetes mellitus.