The invention discloses a lighting bus suspension and a suspension mounting method, relates to the technical field of lighting bus mounting, and aims to solve the problems that a conventional mounting clamp is complex in structure, high in cost and inconvenient to use. The lighting bus suspension comprises a steel tube, wherein lugs are respectively arranged on two sides of the steel tube; screw holes are formed in the steel tube; and bolts matched with the screw holes are arranged on the steel tube. The lighting bus suspension is simple in structure, and the cost, the processing and the use of the lighting bus suspension are all prior to those of conventional matching universal clamps. The invention further provides a lighting bus suspension mounting method which comprises the following steps: firstly, sleeving a lighting bus by the steel tube, and propping the lighting bus by using the bolts; calculating and manufacturing ropes in batch, connecting one end of a rope with a lug, and connecting the other lug with a lamp hanging ring through a connecting rope; fixing the rope on a factory through a lifting device, and fastening a lamp with the lamp hanging ring; and finally, leveling and straightening, and completing mounting. By adopting the lighting bus suspension mounting method, the high-altitude operation can be reduced, the construction difficulty can be alleviated, the construction cost can be lowered, and the working efficiency can be improved.