This study was conducted at the outpatient clinic of the medical center of Viet Yen district - Bac Giang, aims to improve the quality of treatment for hypertensive patients with diabetes and limit progression to complications of the disease to reduce treatment costs and reduce patient mortality. The study results showed that the selected antidiabetic drug is generally consistent with the recommendation (92.16% of patients are treated with metformin, 7.21% with insulin). Hypertension is mainly treated with monotherapy with calcium channel blockers or ACE inhibitors (51.41%). A small percentage of patients receiving hypertension treatment did not follow the guidance of the Ministry of Health (0.63%) There are many interactions between drugs to treat diabetes and hypertension, but mostly at moderate level, Micromedex classified as interactions with no clinical significance.