Whether mild hydronephrosis will be fine for the rest of your life is related to factors such as condition and treatment. If the condition is mild and the treatment is effective, you may be fine for the rest of your life. If the condition is severe, such as the occurrence of infections and kidney function damage, it may aggravate the condition, and in serious cases, it may be life-threatening. Hydronephrosis is mainly due to the obstruction of urine discharge from the kidneys. If the patient has no obvious symptoms, after active treatment, the condition is relieved, at this time may be fine for the rest of his life; if the long-term accumulation of hydronephrosis causes renal decompensation due to elevated renal pressure, or there are infections, obstruction and other injuries to the kidneys, with the progression of the disease may develop into end-stage renal disease, at this time is more serious, and may even be life-threatening. If patients find hydronephrosis, it is recommended to go to regular hospitals in time, and standardize the treatment under the guidance of doctors.