There have been few reports concerning simulation drills for the relocation of severely ill or injured patients treated in intensive care units (ICUs). We herein report our experience of one such simulation drill. It is a Narrative method. A simulation drill was performed on a weekday 2 weeks prior to the actual relocation. We selected 3 mock patients. The first one was a severely ill and unstable patient, the second had severe stroke, and the third had severe trauma. After the simulation, the average transportation time was 15 minutes. The simulation revealed that mock patients with a percutaneous cardiopulmonary support system and intra-aortic balloon pumping in a standard ICU bed could not be accommodated in the elevator. Furthermore, working the elevator controls resulted in wasted time while transferring the patients. As a result, the number of people, who controlled the elevator, was therefore increased during the actual relocation. During the actual relocation, all patients were transported safely and more quickly than predicted based on the results of the simulation drill. Most physicians and paramedical staff have little experience with relocating ICUs, so a simulation drill was necessary to ensure the safe and prompt transport of patients.