The invention discloses an external intervening full-coverage intelligent robot fire-fighting and rescue system for high-rise building fire protection. The external intervening full-coverage intelligent robot fire-fighting and rescue system mainly solves the problem that when a high-rise or super high-rise building catches a fire, due to the height of a floor catching the fire is too large, and a fire extinguishing facility in the building loses efficacy or an external wall fire hazard occurs or an external wall fire hazard vertically spreads, external intervening fire-fighting and rescue cannot be carried out. By means of the external intervening full-coverage intelligent robot fire-fighting and rescue system, two fire protection water columns sprayed out from two adjacent unit robots reach any ignition point at appropriate visual portions of an external wall, a place in a room and an indoor place of the building. By means of the external intervening full-coverage intelligent robot fire-fighting and rescue system, arms of the adjacent unit robots are connected, an upwards-arching transverse beam can be formed through the connected arms, a stretchable type rescue rigging arranged on the arms of the robot can automatically droop and extend out while the upwards-arching transverse beam is formed, trapped persons at any floor can be rescued through the rescue rigging, firemen can be conveyed to any floor, intervening deep into the building for fire-fighting and rescue through a fireplug arranged on a robot actuator is achieved.