Mild hydronephrosis will not heal on its own, the cause of the hydronephrosis needs to be clarified and treated according to the doctor’s instruction before it can be cured. There are many causes of mild hydronephrosis, so you have to go to urology department to check what causes it, and then give corresponding treatment after the cause is clear. If it is just a common urinary tract stone or kidney stone that causes hydronephrosis, it can be treated by physical therapy, i.e. extracorporeal lithotripsy. However, some urinary tract infections, such as glomerulonephritis, need to be treated with antibiotics, and the treatment period may be longer, about a month, and the recurrence is also higher. In addition, you must pay attention to drink more water to promote urination, which is also helpful to treat hydronephrosis. Hydronephrosis will be more serious if it continues to develop and may affect the kidney function, so it must be treated in time to avoid the progress of the disease as much as possible when it is found.