Micro loudspeaker module and design method thereof

The invention discloses a micro loudspeaker module and a design method thereof. The module comprises an upper casing, a vibration system, a middle casing, a magnetic circuit system and a lower casing from the top to the bottom successively. The vibration system is arranged in the middle casing and is in seamless connection with the middle casing, a front cavity and a rear cavity of the middle casing are isolated completely through the upper casing, and preset-shape holes are formed in the wall of the rear cavity, so that the rear cavity and the outside can form gas exchange during the vibration of the vibration system. By means of the module and the design method, the preset-shape holes are formed in the wall of the rear cavity of the middle casing, the rear cavity and the outside can form gas exchange by the aid of the holes, and accordingly, large enough gas exchange space is provided, the design requirement of the micro loudspeaker module is guaranteed, and the problem that design space for the micro loudspeaker module become smaller and smaller and cannot meet the micro loudspeaker module design requirement in the prior art is solved.