Most hypertensive disorders of pregnancy return to normal within 12 weeks after delivery, and after blood pressure returns to normal, urinary protein will gradually return to normal. Hypertensive disorders of pregnancy are common in women during pregnancy, and can be divided into chronic hypertension complicating preeclampsia, chronic hypertension in pregnancy, gestational hypertension, preeclampsia, eclampsia, most of them will return to normal within 12 weeks after delivery, and with the recovery of blood pressure, urinary protein will also gradually return to normal, if blood pressure and urinary protein still have not been recovered after 12 weeks, then it will be transformed into chronic hypertension. The most common disease of proteinuria in postpartum period is hypertensive disease in pregnancy, and it can also be seen in kidney related diseases, such as nephrotic syndrome, chronic nephritis, systemic lupus erythematosus nephritis, etc. If proteinuria occurs again and again in postpartum period, it is recommended to consult internal medicine department to find out the cause of the disease and treat it.