The presence of weakly positive urine protein after pregnancy is usually not important. However, it should be checked dynamically. Due to the relatively high metabolic rate of the body after pregnancy, the liver and kidney burden is relatively relatively heavy, there may be weak positive urine protein, as long as the blood test liver function and kidney function are normal, consider it caused by physiological changes. Other factors are not excluded, first of all, it is related to the diet after pregnancy. In order to supplement nutrition some pregnant women eat a lot of high-protein food, such as eggs, milk, meat, etc., resulting in a high intake of protein in the body, it is possible that there will be an increase in urine protein content, and the symptoms will improve after regulating the diet. Secondly, there is a possibility of contamination during urine sampling, it is advisable to review the urine routine at intervals, if the urine protein is negative, it does not matter. If the protein is positive, it is recommended that a hospital visit be made to exclude other diseases.