The invention discloses a specialized fastener for installation and connection of a steel structure protective barrier. The specialized fastener comprises a steel pipe connecting end and an adhering structural end, wherein the steel pipe connecting end is connected with a cross rod of the barrier in a clamping sleeve mode, and the adhering structural end is connected with a steel column. The adhering structural end and the steel pipe connecting end are movably connected through a connecting shaft, and rotate oppositely through the connecting shaft; the adhering structural end is a trough-type component, and comprises a front clamping plate and a rear clamping plate which are parallel to each other; and a connecting plate is connected between the front clamping plate and the rear clamping plate, a nut used for installing a jackscrew is arranged on the outer side of the front clamping plate, and the front clamping plate is provided with a jackscrew hole which is coaxial with the nut. According to the specialized fastener for installation and connection of the steel structure protective barrier, a rod piece of the barrier and the steel column are installed and connected by adopting an assembling mode, the problem of installation and connection of the steel pipe protective barrier and a steel structure is solved, connection is firm, and the structure cannot be damaged. The specialized fastener has the characteristics that the structure is simple, light and handy, connection is firm, installing and detaching are convenient and rapid, and recycling use can be achieved, and the requirements of canalization, standardization and universalization are met.