Urine protein refers to the presence of protein in the urine, of which albumin is predominant. The appearance of urine 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 the proteins in the blood will be excreted through the urine. The more urine protein, the more serious the condition is reflected, and the condition needs to be judged comprehensively by checking kidney function, 24-hour urine protein quantification and other indicators, and if necessary, kidney puncture biopsy is checked to clarify the specific pathological type. In the treatment of urine protein, the commonly used drugs include ACEI or ARB, as well as hormones and immunosuppressive drugs. It is also important to pay attention to regular follow-up and review to monitor changes in the disease.