A weakly positive urine protein after pregnancy is generally not important. As the metabolic rate of the body is relatively high after pregnancy, the liver and kidneys are relatively heavily burdened, it is possible to have weak positive urine protein, as long as the blood test liver function and kidney function are normal, it is considered to be 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, it is possible that the urine sample was contaminated during the urine sampling, it is advisable to recheck the urine routine for a period of time, if the urine protein is negative, it does not matter. Finally, if you are suffering from hyperemesis, it can also cause a weak positive urine protein.