A robotized bed according to one or more embodiments may include a table for placing a patient, and a robot arm configured to support the table by a distal end, and including a base, a first movable element supported by the base and a second movable element coupled to the first movable element by a horizontally-rotating joint, wherein the robot arm is configured to move the table to a plurality of predetermined positions including a treatment position for a doctor to treat a patient, wherein the robotized bed is configured so that the robotic arm do not come in contact with the table, when the robot arm rotates the table while maintaining the table parallel to the horizontal plane.