Weakly positive urine protein detected after pregnancy may be contaminated by vaginal secretions. Positive proteinuria can also be seen in certain diseases such as kidney disease, hypertensive disorders of pregnancy or systemic diseases. Proteinuria refers to routine urine examination can be detected from the urine protein, the results can be weak positive, positive, etc. Usually women’s urethral opening and vaginal opening close to the weak positive proteinuria is mostly seen in vaginal secretion contamination, it is recommended that you can wash the vulva to take the middle part of the urine to review the exclusion. Proteinuria can also be seen in pathological conditions, such as hypertensive disorders in pregnancy, which can be manifested as elevated blood pressure, proteinuria, or pregnant women with previous underlying renal disease, such as primary kidney disease such as acute nephritis, pyelonephritis, and secondary renal disease, such as allergic purpura nephritis, lupus nephritis, and so on. It can also be seen with systemic diseases such as multiple myeloma, macroglobulinemia, poisoning and so on. Proteinuria during pregnancy should be treated under the guidance of a doctor, who should consult a doctor in time to find out the cause of proteinuria, and pay attention to daily rest, avoiding exertion and exposure to cold.