Systemic lupus erythematosus (SLE) which is thought to be autoimmune in nature affects multiple organs and produces a diversity of signs and symptoms. However, cardiovascular manifestations of SLE are manifested more frequently by autopsy. Recently, with the prolonged survival and improvement of diagnostic methods in SLE including echocardiography, the morbidity and mortality associated with cardiovascular manifestations of SLE became more apparent and increased. Simultaneous involvement of the pulmonary artery and the myopericardium in SLE is known to be rare. Pulmonary hypertension is known to be associated with poor prognosis. We report a 27 year-old female patient of SLE with pulmonary hypertension, pericarditis and left ventricular systolic dysfunction.