Sea buckthorn is not usually used to treat diabetes. Sea buckthorn is a kind of traditional Chinese medicine, which has the effects of strengthening the spleen and eliminating food, relieving cough and phlegm, and promoting blood circulation and removing blood stasis. It is mainly used for treating spleen deficiency with little food, cough and phlegm, and blood stasis. Therefore, sea buckthorn can not be used to treat diabetes. Patients diagnosed with diabetes mellitus should be treated with glucose-lowering drugs such as metformin and acarbose under the guidance of doctors, and inject insulin when necessary, together with dietary control and proper exercise, etc. The above methods can play a role in treating diabetes mellitus. Patients diagnosed with diabetes should actively cooperate with the doctor to take a scientific approach to lowering sugar, not unauthorized use of medication to avoid delays in the treatment of the disease.