Primary glomerular hematuria, commonly known as renal hematuria, means that hematuria originates from glomeruli and is clinically manifested as simple hematuria or hematuria with proteinuria, which is more common in primary glomerular diseases, such as IgA nephropathy, Mesangial proliferative glomerulonephritis, focal glomerulosclerosis, renal cyst, polycystic kidney and so on, and secondary glomerular diseases such as lupus nephritis and Henoch-Schonlein purpura nephritis are excluded. There is no relevant record of the name of the disease in the literature of traditional Chinese medicine. According to the clinical characteristics of the disease, it is mainly classified as “urine blood”, “drowning blood”, “urine blood”,“blood syndrome” and so on. Professor HE Yuxu, according to Huang Yuanyu’s theory of “drowning blood”, believes that the disease is based on cold water and dampness of the soil, depression of the spleen, dampness and heat of the bladder and deficiency of Shaoyin. Therefore, Huang’s Ningbo decoction was used to treat primary glomerular hematuria based on the method of purging dampness and dryness and rising wood to depression.