Antiglomerular basement membrane antibody disease is manifested by progressive glomerulonephritis, intraalveolar hemorrhage and antiglomerular basement membrane antibodies. It is frequently characterized by mortality. We present a case of a 18 year-old young showing remission by early diagnosis. The patient was admitted to emergency department with symptoms and findings of atypic pneumonia with bloody sputum. Chest radiography detected patchy alveolar opacities (Figure A). An ampric antibacterial treatment was given including macrolide, and bronchodilators because of bronchospasm. The patient was suspected for goodpasture's syndrome (GPS). Anti-glomerular basement membrane (AGBM) antibodies test was send. He developed massive alveolar haemorrhage in the resolution phase of atypic pneumonia. Laboratory examination revealed proteinuria of 20 mg/dl, anemia Hb of 8 g/dl, hematocrit of 25%, microscopic hematuria of 350 erythrocite/HPF. AGBM antibodies was found as positive. GPS was diagnosed. Early immunosuppressive treatment with pulse methylprednisolone and cyclophosphamide and plazmaferez was started. Noninvasive positive pressure ventilation (NPPV) was used for severe hypoxemia. Haemolytic anemia and thrombocytopenia developed under plasmaphresis treatment. Early treatment resulted with remmission. In conclusion, the current case showed that Goodpasture's syndrome may have a favorable prognosis with early diagnosis and proper treatments including NPPV.