At present, diabetes is mainly treated by oral medication and insulin injection, and the commonly used oral medications mainly include insulin promoters, α-glucosidase inhibitors, insulin sensitizers, biguanides, DPP-4 enzyme inhibitors, SGLT-2 inhibitors and so on. The drug selection has various forms, which are matched with each other according to the individual conditions of different patients. For example, for patients with milder disease, monotherapy can be chosen, and patients with more severe disease can be combined with drugs. However, there are indications and contraindications for the drugs, which need to be analyzed and dispensed according to the actual situation of the patients, and it is recommended to choose reasonably under the guidance of professional doctors.