Hemorrhagic fever with renal syndrome (HFRS) presents clinically with the triad of fever, hemorrhage, and renal failure. The hemorrhage varies from transient petechial lesions to fulminant, massive bleeding. Most of the hemorrhagic manifestations occur from the febrile stage to the oliguric stage, and rarely in the convalescent stage. We report a case of bilateral psoas and left iliacus muscle hemorrhage occurring during the diuretic stage in a patient with HFRS. Without surgical decompression, he recovered from the iliopsoas hemorrhage with hemodialysis and supportive care.