ABS TRACTNeonatal Bartter syndrome (BS) is an inherited renal tubular disorder characterized with normal blood pressure, hypokalemia, hypochloremic metabolic alkalosis, hyperreninemia and increased urinary loss of sodium, potassium and chloride. In this disorder complications such as severe dehydration episodes, recurrent vomiting, hypercalciuria, and subsequently nephrocalcinosis, growth and development retardations. Herein, we reported a premature infant with neonatal BS, who successfully treated by oral indomethacin and potassium supplements without any complications.