The invention relates to a high-air falling prevention device for spraying detection equipment, and belongs to the technical field of construction water spraying detection. According to the technicalscheme, the high-air falling prevention device comprises a rack, winding drums, a rope and a driving component, wherein the rack is arranged on a roof, the winding drums are symmetrically arranged onthe rack, one end of the rope is wound on the winding drums and the other end of the rope is connected to a spraying component, the driving component is arranged on the rack and is used for driving the winding drums to rotate, and a deviation correcting component is further arranged on the roof and is used for carrying out deviation correcting on the rope to enable the rope to be wound on the winding drums in a preset direction. During using the high-air falling prevention device, when water spraying detection is carried out, the safety of the whole spraying detection equipment can be improved, the labor amount of workers is reduced, and unnecessary risks and troubles are reduced.