The invention provides a special portal-type bolster frame assembly manipulator for a truck bogie production line, which is mainly composed of a frame, two side frame manipulators, a swing bolster manipulator and an electric control unit, wherein the side frame manipulators, swing bolster manipulator and electric control unit are installed on the frame; the frame is mainly composed of a cross beam, a support beam, a vertical support and a traveling beam which are connected with each other; the two side frame manipulators are installed on the cross beam, and each side frame manipulator is composed of a side frame transverse operating/vertical lifting unit and a side frame grabbing/clamping/turning unit; and the swing bolster manipulator is installed on the cross beam and positioned betweenthe two side frame manipulator. The invention provides an indispensable important apparatus of the key position bolster frame assembly for a truck bogie production line; the side frame manipulators can operate leftward and rightward or forward and backward to grab and lift the side frames transported by the transport vehicle, and smoothly align and assemble the side frame with the swing bolster grabbed by the swing bolster manipulator, and thus, the degree of mechanization and automation is high; and the invention has the advantages of labor saving, time saving and high assembly quality, and eliminates the potential safety hazard in the craning process.