Patients with ulcerative colitis(UC) can experience various extraintestinal complications in their course of disease, such as skin lesions, arthritis, cholangitis, ocular manifestation. Thrombosis may occur in 1.2~7.5% of patients, and it is known that the mortality is up to 25%. The sites of thrombosis are usually in deep veins, such as veins of lower extremities, pelvic venous plexus. But, on rare occasion, thrombosis can occur in cerebral veins, and result in cerebral infarct and hemorrhage. It is known that left ventricular(LV) thrombi can be developed when LV dysfunction exists, but it is extremely rare that LV thrombi occur in patients with normal LV function. So far, in patients with UC, there were a lot of cases complicated with venous thrombosis but arterial thrombosis was uncommon. Moreover, there was the only one case of LV thrombi with normal LV function in patient with UC. Accordingly, we report one case of LV thrombi with hemorrhagic cerebral infarct despite normal LV function in a patient with UC.