The utility model discloses a quick-mounting type iron tower crawling nail which comprises a [-shaped force bearing component. The force bearing component comprises a bottom side and sides which are placed at the two ends of the bottom side and are perpendicular to the bottom side. At least one thread hole is formed in one of the sides. A crawling nail bolt is arranged in the thread hole. A rectangular square hole is formed in the other side. The square hole is a limiting groove which is used for being limited in iron tower angle iron. Threads matched with the thread hole are arranged at the front half section of the crawling nail bolt. The back half section is of a smooth rod structure and is used as a grabbing-treading position during crawling. When working personnel climb upwards, hands are used for grab the crawling nail, feet can tread on two crawling nails at the same time, and stability and reliability are achieved. The personnel safety of the iron tower crawling personnel is guaranteed during an iron tower crawling process, for working personnel, time and labor are saved, and safety is achieved.