Drug induced thrombocytopenia is a relatively not uncommon and potentially serious side effect of therapy. It's characterized by thrombocytopenia, petechia, purpuric lesions and occasionally serious bleeding such as intracranial hemorrhage. The patient was 24 year-old female who was given rifampin 600mg daily for treatment of intestinal tuberculosis. Rifampin-induced immune thrombocytopenia was occurred 25 days after initiating therapy. Platelet and leukocyte count were 23,000/mm3, 2,850/mm3, respectively. Two week after discontinuation of antituberculous medication, platelet count was recovered. We report this case with a review of literature. (Intestinal Research 2006;4:64-68)