Protein in urine (+) can be treated with drugs that lower urine protein, such as Huangkui capsules in Chinese medicine and Perindopril tablets and Irbesartan tablets in Western medicine. In addition, it is important to actively look for the cause of the disease and treat it from the cause. Under normal circumstances, a negative protein in the urine mainly indicates that the filtration membrane of the kidney is not damaged. When the filtration membrane of the kidney is damaged, the permeability increases and protein is lost from the urine, which can be detected as positive in the urine routine. After the appearance of protein in urine, you can apply drugs to reduce urine protein, and the three commonly used ones are mentioned above. The main thing is to find the underlying cause and deal with it from the cause. The more common ones are chronic nephritis and other secondary nephritis, such as lupus nephritis and purpura nephritis. Chronic nephritis needs to be treated with antiplatelet aggregation, blood pressure control, diuresis, and decongestion, in addition to the application of drugs to lower urine protein. While lupus nephritis also needs to be treated by applying hormones and immunosuppressants, purpura nephritis needs to be treated by applying anti-allergic drugs based on the removal of allergens.