The present invention provides a speaker module comprising a module housing, and a speaker unit accommodated in the module housing, and the speaker unit separates a cavity formed by the module housing into a front acoustic cavity and a rear acoustic cavity; sound absorbing particles are filled into the rear acoustic cavity, and the sidewall of the module housing is provided with an isolation mesh cloth for isolating the sound absorbing particles and the speaker unit; the isolating mesh cloth is fixed to a first fixing frame by injection molding, and the first fixing frame is fixed in the corresponding module housing by injection molding. According to the present invention, it can prevent the problems such as leakage, deviation or breakage of the mesh during the process of fixing the isolating mesh cloth.