The effects of baroceptor reflex on the sympathetic nerve activity to the intestine (INA) and kidney (RNA) were compared in anesthetized cats. Grouped discharges synchronous with the cardiac cycle was not the major pattern in INA and approximately 73 % of the total INA was composed of a continuous or fluctuating pattern. With increase in mean aortic pressure from 116 to 216mmHg after administration of norepinephrine, INA showed various response patterns: initial inhibition followed by an increase (Type A), increase without inhibition (Type B), slight inhibition (Type C) and no change (Type D), whereas RNA decreased to the noise level. Type A and B were the most common response patterns. In the open loop condition, initial inhibition in Type A disappeared, while the increase of INA in Types A and B remained unchanged. When RNA was completely inhibited by baroceptor inputs during occlusion of the descending thoracic aorta, INA was not inhibited but rather slightly increased. It is concluded that INA showed quantitatively and qualitatively different responses to baroceptor inputs as compared to RNA.