Patients with hypertension will experience sleepiness. Patients with hypertension will directly experience increased peripheral resistance of blood vessels, decreased elasticity and increased brittleness of arterial walls, and relatively affected blood viscosity, which will make people prone to sleepiness through the above-mentioned aspects. In normal people, the inner lining of blood vessels is smooth and fluid, but in patients with hypertension, especially prolonged hypertension, it can lead to damage to the endothelial cells of blood vessels, which gradually deposit into atherosclerotic plaques under the inner lining of blood vessels, causing vascular sclerosis, decreased elasticity and increased brittleness, which can make patients appear sleepy due to insufficient vascular dynamics and poor hemodynamics. In addition, for patients with long-term hypertension, chronic pulmonary insufficiency can occur, which can lead to alveolar diffusion dysfunction, decreased arterial oxygen saturation, and low partial pressure of oxygen, which can also lead to drowsiness. Patients with hypertension are often combined with hyperlipidemia, and when blood viscosity increases, blood flow resistance increases, which can also lead to drowsiness.