A loudspeaker fixing structure and a display device are provided. The loudspeaker fixing structure includes: a fixing frame configured to be connected to a back plate of the display device; a pair of fixing side plates, opposite to each other and configured to be connected to a loudspeaker body; fixing members, fixed on the fixing frame and arranged in a one-to-one correspondence with the fixing side plates, and in each pair of the fixing side plate and the fixing member, the fixing member is at a side of one fixing side plate away from the other fixing side plate, the fixing member is fixed to the fixing side plate through a curved protrusion and a curved groove, and a protrusive direction of the curved protrusion is perpendicular to the fixing side plate.