The invention discloses an omnidirectional horizontal type suction sewage arm for a new energy combined suction sewage truck. The omnidirectional horizontal type suction sewage arm for the new energy combined suction sewage truck comprises a slewing bearing (1), wherein a hollow air-intake casing (2) is arranged in the middle of the slewing bearing (1), and a suction sewage arm unit (3) is disposed above the slewing bearing (1). The omnidirectional horizontal type suction sewage arm for the new energy combined suction sewage truck is characterized in that a suction sewage pipe spool unit (5) is arranged on the slewing bearing (1) through a mounting bracket (4), the suction sewage arm unit (3) is disposed horizontally on the side end of the mounting bracket (4). According to the omnidirectional horizontal type suction sewage arm for the new energy combined suction sewage truck, the problem that the suction sewage arm of the suction sewage truck in the prior art only changes the supporting points of the suction sewage pipe without the achievement for the real extension of the suction sewage pipe length is effectively solved, and the problem that the overall height of the truck is increased caused by that the suction sewage arm of the suction sewage truck in the prior art is vertically disposed above the slewing bearing (1) is also effectively solved.