Type 2 diabetes mellitus and chronic kidney disease (T2DM-CKD) is common in the Chinese population and seriously threatens human health. With the development and application of new drugs, the outcome of T2DM-CKD has been improved in recent years. However, how to combine those drugs effectively and reduce side effects deserves further attention. "Renal triple therapy " (RTT) refers to combined and sequential use of three key medications in treatment of T2DM-CKD, namely renin-angiotensin system inhibitor (RASi), sodium-glucose cotransporter 2 inhibitor (SGLT-2i) and non-steroidal mineralocorticoid receptor antagonist (finerenone), targeting various pathogenic factors in T2DM-CKD. Clinical studies have demonstrated that RTT is superior for protecting the kidney and heart compared with single or dual therapy, and thus improves outcomes of patients with T2DM-CKD. Moreover, RTT can reduce the risk of drug-induced hyperkalemia. Based on research progress at home and abroad and personal clinical experience, this article discusses the origin, theoretical basis, benefits and precautions of RTT in treating T2DM-CKD, aiming to provide a good treatment strategy for primary care physicians and improve the overall level of disease prevention and control.