Proteinuria is divided into two categories: physiological and pathological. Physiological state with less than 100 mg/24h of protein in the urine and vice versa is pathological proteinuria, which is common in all types of renal disease. Proteinuria is mainly an increase of protein content in urine, which exceeds the normal amount that can be filtered by the glomerulus. Generally, a protein content of more than 3.5g/24h in urine is called massive proteinuria. The appearance of urine protein is mainly due to abnormal kidney function and glomerular filtration dysfunction, resulting in too much filtered protein, commonly seen in chronic kidney disease, but the amount of urine protein leakage is not proportional to the condition, and the leakage of urine protein in patients with mild kidney disease is not necessarily less than that in patients with severe kidney disease, which needs to be combined with other related examinations. Once there is proteinuria, first of all, we should exclude physiological factors and postural factors, and then improve relevant examinations, such as kidney ultrasound, kidney function tests, urine routine tests, etc., to generally determine the situation of kidney damage, and if persistent persistent proteinuria is present, it means that the degree of kidney damage is relatively large and must be treated in time. The treatment of proteinuria needs to go to the nephrology department of a public hospital to clarify the degree of kidney damage and the cause of urine protein, and choose a suitable treatment plan according to the type of kidney disease, mainly to try to protect kidney function, and then strive to restore kidney function. Do not use drugs at your own discretion, if you use some drugs that harm kidney function, it will aggravate the original condition and lead to the deterioration of the condition.