Urine protein refers to the proteins that appear in the urine, of which albumin is the main one. The presence of urinary protein often indicates that the patient has kidney-related diseases, such as nephritis and nephrotic syndrome. These kidney diseases can destroy the glomerular filtration barrier, and proteins in the blood will be excreted through the urine. The more protein in the urine, the more serious the condition is reflected, and it is necessary to comprehensively determine the condition by checking the renal function, 24-hour urine protein quantification and other indicators, and checking the renal puncture biopsy to clarify the specific type of pathology if necessary. In the treatment of urinary protein, commonly used drugs include ACEI or ARB drugs, as well as hormones, immunosuppressants and so on. Attention should also be paid to regular follow-up and review to monitor changes in the condition.