Objective:To observe the clinical effects of Tianmaerzhifang on cases of middle-old hypertension belonged to the type of hepatic and renal yin deficiency, Method; in the test , double-blind and paralled control were applied, 101 cases in therapeutic group were given Tianmaerzhifang and 34 cases in control group were given Tianmashouwu Tablet. Result. the total effective rates were 79.4 % and 89. 1% in control group and therapeutia group on the improvement of syndrome aspect. The total effective rates of decreasing the blood pressure, were 67.6...