Fabricated steel structure

The utility model relates to the technical field of steel structures, and discloses an assembly type steel structure which comprises a main rod body, and two fixing openings are formed in the left side of the main rod body. According to the assembly type steel structure, when the steel structures are fixed together, two threaded rods are inserted into upper and lower side fixing openings from the left side of the main rod body, and limiting rods on the upper and lower sides are inserted into upper and lower side limiting grooves until the limiting rods cannot be inserted; at the moment, two fixing ring frames are in threaded connection with the outer sides of the upper and lower side threaded rods and located on the right side of the main rod body, and the upper and lower side fixing ring frames are screwed on the outer sides of the upper and lower side threaded rods through two rotating pieces fixed to the right sides of the fixing ring frames; and after screwing, the fixing ring frames on the upper side and