A floor power box with a room layout comprises a box body, power switches of all the rooms, and a room layout surface plate, wherein the body is fixed to the back face of the room layout surface plate, a plurality of room number display screens are arranged on the room layout surface plate, each room number display screen is formed by arranging a plurality of LED lamps, the LED lamps are connected with output ends of the power switches of the corresponding rooms respectively, and the power switch of each room is arranged at one side of the corresponding room number display screen. The floor power box with the room layout has room number marks, and can clearly remind people of the room numbers corresponding to the power switches, and therefore the situation that people can not find the power switches of the rooms is avoided, and false operation is avoided. If a certain room has a power failure, people in the room can know whether closing of the power switch causes the power failure without approaching the power box. At night, the LED lamps on the room layout surface plate are turned on so that people can find the corresponding rooms conveniently.