Speaker arrangement structure for vehicle

The invention provides a speaker arrangement structure for a vehicle, which ensures the capacity of a speaker box without pressing a cabin, so that the layout of vehicle components below the inner side of a hinge column cabin is established, and the flow resistance of air in the speaker box is reduced to improve the bass playing efficiency. In the loudspeaker arrangement structure of the vehicle, a loudspeaker box (40) is provided with an abutting part (44) which abuts against a hinge column (30), an upper space part (S3) which protrudes from the abutting part (44) to the inner side of a vehicle width direction above a gap part (S1) and accommodates a loudspeaker (41), and an extension space part (S4) which extends downwards from the upper space part (S3) and is adjacent to the inner side of the gap part (S1) in the vehicle width direction. A closed space (S5) is formed by communicating the upper space section (S3) and the extended space section (S4) in the vertical direction, and in a cross section orthogona