Not all patients with hypertension are potassium deficient. The majority of patients who develop hypertension have primary hypertension. The exact cause of primary hypertension is unclear and may be related to a variety of factors, such as genetic and environmental factors, etc. Patients with primary hypertension rarely develop potassium deficiency. Some patients may have secondary hypertension, such as primary aldosteronism. Aldosterone has a sodium-preserving and potassium-excretory effect, which can lead to an increase in blood pressure along with a decrease in blood potassium. Renal disease, renal vascular disease, etc. can also cause hypertension, which rarely leads to loss of potassium. Patients with potassium loss accompanied by hypertension should go to the hospital in time for hypertension-related examinations to clarify the levels of aldosterone and renin, and be given diagnosis and treatment under the guidance of a physician.