Based on the "warming the injured and activating the relaxed" theory, this article explored the pathogenesis and treatment of renal hematuria. The pathogenesis of renal hematuria mainly lies in the deficiency of spleen and kidney, blood stasis and qi obstruction, and the internal channeling of pathogenic wind. The author put forward that "warming the injured and activating the relaxed" as the general treatment principle of renal hematuria. In clinical practice, the main treatment methods should be to cultivate and supplement the spleen and kidney, promote blood circulation and expel wind, warm and supplement the spleen and kidney to restore the fixation of the qi of the viscera, promote blood circulation and remove blood stasis to remove the blood stasis outside the blood overflow vessels, and eliminate pathogenic wind to prevent and stop the disturbance of Jingguan. In accordance with the treatment of syndrome differentiation, it emphasized both nourishing and dispelling pathogenic factors, and according to the degree of deficiency of zang-fu organs and the retention of pathogenic factors, and listed the related therapeutic drugs, which provided a new idea and method for the clinical application of TCM in the treatment of renal hematuria.

Chronic kidney disease is characterized by renal structural damage and dysfunction （for over three months） caused by various factors. In traditional Chinese medicine， chronic kidney disease can be classified as edema， ischuria， consumptive disease， and anuria and vomiting. The pathogenesis of chronic kidney disease is frequently attributed to the deficiency of lung， spleen and kidney， dampness combined with stasis， and accumulation of turbid toxin. Huaiqihuang granules are a Chinese patent medicine composed of Vanderbylia robiniophila， Lycii Fructus， and Polygonati Rhizoma， with diverse pharmacological effects such as improving immunity and protecting kidney function. It is widely used in the treatment of cancer， chronic kidney disease， and respiratory system diseases. The available studies have demonstrated that Huaiqihuang granules can intervene in the progression of chronic kidney disease via various ways， such as protecting glomerular podocytes， inhibiting the proliferation of glomerular mesangial cells， resisting renal interstitial fibrosis， alleviating renal inflammation and oxidative stress， and regulating renal cell apoptosis and the immune system function. The clinical application of Huaiqihuang granules is based on conventional treatment and has achieved remarkable effects in the treatment of children's nephrotic syndrome， diabetic nephropathy， nephritis of Schonlein-Henoch purpura， IgA nephropathy， and chronic renal failure. Scholars have achieved great progress in the research on the mechanism and the clinical application of Huaiqihuang granules in the treatment of chronic kidney disease. However， the detailed summary of the progress in recent years remains to be carried out. Therefore， this paper reviewed the available studies in this field， aiming to provide a reference for the comprehensive and extensive clinical application of Huaiqihuang granules in the treatment of chronic kidney disease.

Renal hematuria is caused by glomerular damage and basement membrane rupture due to coagulation dysfunction， ischemia and hypoxia， and immune function damage， resulting in red blood cells exuding through glomerular filtration membrane and excreting with urine. It is mainly manifested as microscopic and macroscopic hematuria. Among them， microscopic hematuria is characterized by microscopic urine sediment examination， there are three or more red blood cells per high-power microscopic field. Traditional Chinese medicine （TCM） believes that the pathogenesis of renal hematuria always belongs to ''asthenia in origin and sthenia in superficiality''， and ''asthenia in origin'' is caused by the deficiency of the three viscera of the lung， spleen， and kidney， while ''sthenia in superficiality'' is caused by the combination of dampness and blood stasis and the external disturbance of wind pathogens. The key pathogenesis features are ''deficiency， dampness， heat， blood stasis， and wind''. After consulting the TCM literature related to renal hematuria， the author found that the common syndrome types of renal hematuria in clinical practice were the deficiency of both Qi and Yin， the deficiency of both Yin and fire， the unsteadiness of kidney Qi， the deficiency of spleen and kidney Yang， the wind heat hurting the collateral， the dampness-heat blocking， and the blood stasis and internal resistance. The commonly used classical or temporal prescriptions included Shenqi Dihuangtang（参芪地黄汤）， Zhibai Dihuangtang（知柏地黄汤）， Wubi Shanyaowan（无比山药丸）， Jisheng Shenqiwan（济生肾气丸）， Sishenwan（四神丸）， Yinqiaosan（银翘散）， Bazhengsan（八正散）， Sanrentang（三仁汤）， Xuefu Zhuyutang（血府逐瘀汤）， Danggui Shaoyaosan（当归芍药散）， Xiaoji Yinzi（小蓟饮子）， Buzhong Yiqitang（补中益气汤）， et al. Self prepared prescriptions mainly include Tongluo Ningxue prescription （通络宁血方）， Qingre Zhixue prescription（ 清热止血方） and Wuteng Tongluo drink （五藤通络饮）. The traditional Chinese medicine is commonly used for the treatment of Xueniaoling granules（血尿灵冲剂）， Xueniaoan capsules（血尿安胶囊）， Ningmitai capsules（宁泌泰胶囊）， Huangkui capsules（黄葵胶囊） and Yishen nixuexiao granules（益肾溺血消颗粒）， which constantly enriched the treatment of renal hematuria. The combination of TCM and western medicine has obvious advantages. The treatment of renal hematuria in clinical practice often combines with modern medical methods， which has a good therapeutic effect on the improvement of symptoms and indicators of renal hematuria. At present， many doctors have made in-depth exploration on the etiology， pathogenesis， and clinical treatment of renal hematuria， but few scholars have made detailed induction and collation in recent years. Therefore， the author has collated the clinical data on the treatment of renal hematuria with TCM in the past ten years， and reviewed it from the aspects of etiology， pathogenesis， and clinical research， to provide useful references for clinical intervention and delay the progress of renal disease.