The present paper reports the clinical analysis of 10 cases with primary aldosteromism. 8 cases of unilateral adremal adenona in cortex. 1 case of adrenal hyperplasia and 1 ciase of adenoma assocated with, hyperplasia in opposite side. All of patients had hypertension hypokalemia and adrenal located examination show positve findings. 24 hours urine kalium (8/10) and plasma aldosterone level (6/6) was increased, but plasma renin activity was suppressed. This paper discussed how to make early diagnosis and choice of treatment in primary aldosteromism.