The handicapped Restroom System is the designed system for the handicapped whose movement is inconvenient or the old and feeble person to use the restroom with convenient and safe. Using the exclusive inner/outer switch, can coming and going safely and when using in inner site, the lamp of "using now(occupied)" is on at outer site and at the same time Opening switch cannot be operated at the outer site. It has the emergency opening key function to provide against an accident in inner site.