A 20-year-old woman, with systemic lupus erythmatosus complicated by steroid-and immunosuppressant-resistant bilateral pleural effusion, was admitted to the emergency room because of dyspnea and fever. Chest Xray film revealed bilateral massive pleural effusion. Bilateral thoracocentesis yielded fluid with chyle. Conservative treatment including intravenous hyper-alimentation and continuous drainage were performed but with no remarkable improvement. She underwent thoracoscopy-aided ligation of the thoracic duct. After the operation, bilateral pleurodesis was performed by intrathoracic injection of OK-432, because of uncontrolled pleural effusion. There have been no signs of recurrence at 10 months in this case of SLE with steroid-and immunosuppressant-resistant pleural effusion.