Abstract: Professor Zhao Yuyong thinks the root of renal hematuria is deficiency of lung， spleen and kidney. The occurrence of renal hematuria is spleen deficiency failing to astringe. While the branch is heat and stasis. Stasis and obstruction in the kidney collateral is the basic pathogenesis. The treatment principle is to reinforce healthy qi and treat the root， focusing on nourishing lung， spleen and kidney and dispelling pathogen to treat the branch， cooling blood and activating blood to stop bleeding. Moreover， for stasis and obstruction in the kidney collateral， insect drugs should be applied to dredge collaterals. In the process of renal hematuria treatment， the thought of prevention in TCM is also embodied.