A 31-year-old man was admitted to our hospital because of frequent diarrhea. Colonoscopy showed ring ulcers on the rectum and ascending colon and chest X-ray showed abnormal shadows which were diagnosed as tuberculosis by sputum PCR. He started treatment with isoniazid (INH), rifampicin (RFP), pyrazinamide (PZA) and streptomycin (SM), however, eruption and ileus were seen. Then, he was retreated with ciprofloxacin (CPFX), kanamycin sulfate (KM) and prednisolone (PSL). Subsequently, we added RFP and further added calcium para-aminosalicylate (PAS). All these treatment was effective, and he was discharged from the hospital.