After admission, the following tests should be performed: routine examination: blood, urine, stool + occult blood, liver and kidney lipids, 24h urine K, Na, Cl (preferably on the same day when blood potassium is low), blood type, Rh factor, PT + A, hepatitis B five, hepatitis C antibody, HIV-Ab Urology Department of Guizhou Medical University Hospital Sun Fa ECG chest X-ray front and side position liver, gallbladder, pancreas and spleen ultrasound to measure blood pressure + heart rate (lying and standing position) endocrine examination: blood gas (when blood K is low) 3hOGTT (blood Glu, K, Na×5, blood insulin×5, urine K, Na, Cr×5), 24hUFC, 24h urine CA prone aldosterone test: the day before the test, keep 24h urine K, Na, Cl, and perform prone aldosterone test the next day (patient fasted overnight on the test day, 4AM) The next day, the test was performed in the prone position (the patient was fasted overnight on the test day, 4AM, and blood was taken in the prone position to measure K, Na, Cl, Ald, PRA and AII at 8AM; then tachypnea 40mg or 0.7mg/kg (total tachypnea <40mg), standing for 2 hours, and blood was taken in the prone position to measure Ald, PRA and AII at 10AM), and finally the standing ALD/PRA ratio was calculated. **Avoid taking diuretics, ACEI, ARB, β-receptor antagonists, and Antiseptic before the test. If you use the above drugs, you should stop taking them for 1-2 weeks before doing the prone standing aldosterone test, and decide whether to apply cardiac pain relief depending on your condition; supplement potassium to normal or near normal blood potassium before the test in patients with hypokalemia. The day before the test, 24h urine K, Na and Cl were taken, and the next day the test was performed (on the test day, the patient was fasted overnight, kept in the prone position from 4AM, blood pressure was measured at 8Am, blood K, Na and Cl, ALD, PRA and ATII were measured in the prone position, 25mg of Kepone was taken orally, and blood pressure and ALD, PRA and ATII were measured at 10AM after 2 hours of sedation. If necessary: A gong 2, sex hormones, blood F, ACTH adrenal glands: CT of both adrenal glands (plain scan + enhancement + coronal and sagittal reconstruction) Hypertension complications examination: fundus, UCG, 24h urine protein quantification carotid artery, both renal arteries, lower limb arteries BUS