Respiration and anaerobe glycolysis of femur bone marrows of unilateral sympathectomized rabbits were compaired with each other side on the following 3, 5, 10, 20, 30 & 120 days after the operation with the direct method of the Warburg constant volume respirometer. The results obtained were as follows: 1) The respiration (Q(O(2))) showed no remarkable differencs between each other. 2) The anaerobe glycolysis (Q(M)(N(2))) showed significant value on the operated side in 5th, 10th and 20th day groups after the operation, but transitory. So the interception of the sympathetic in rabbits promotes the function of the bone marrow. In the other word the sympathetic reduces the function of the bone marrow.