The invention relates to a multipoint excitation source sound box with a radiating structure. The sound box comprises a box body and is characterized in that the box body is long and flat, at least two low pitch loudspeaker installation holes are formed in a front panel of the box body in the length direction, and a low pitch loudspeaker unit is installed in each low pitch loudspeaker installation hole. The low pitch loudspeaker units are arranged coaxially on the same plane, and sound of the two units are radiated towards the front of the box body. A high-mid pitch loudspeaker installation hole is formed in one short side of one end of the box body, and a high-mid pitch loudspeaker unit is installed in the high-mid pitch loudspeaker installation hole. The sound radiation direction of the high-mid pitch loudspeaker unit is perpendicular to the sound radiation direction of a front high pitch loudspeaker unit, and the high-mid loudspeaker unit is coaxial with all the low pitch loudspeaker units. The multipoint excitation source sound box has the advantages of being ingenious in structure, small in size, thin in structure, good in long time operation sound performance and good in reliability.