The invention relates to the technical field of architectural engineering, in particular to a special-shaped quick joint steel column and a construction method thereof. The special-shaped quick joint steel column comprises first angle steel and second angle steel, and a web is arranged between the first angle steel and the second angle steel; connecting steel plates are arranged at the two ends of the first angle steel and the two ends of the second angle steel, and bolt holes are formed in the connecting steel plates. Connecting sheet sets are arranged on the web, each connecting sheet set comprises two connecting sheets, and a vertically placed bend is arranged at the outer end of each connecting sheet. The connecting sheet sets comprise the long connecting sheet sets and the short connecting sheet sets, and the long connecting sheet sets and the short connecting sheet sets are alternately arranged. The construction method of the special-shaped quick joint steel column comprises the following steps of pre-burying of bolts, mounting of the special-shaped quick joint steel column and implanting of the connecting sheets in brick body horizontal ash clearances. According to the special-shaped quick joint steel column and the construction method thereof, light steel is creatively adopted for replacing concrete to serve as a constructional column, manpower is saved, work efficiency is improved, the procedures are simplified, the construction period is shortened, cost is reduced, and quality is guaranteed better.