A double-vibrating-diaphragm loudspeaker module comprising: a peripheral housing (1, 2) provided with a first sound hole and a second sound hole; a supporting member (5, 6, 37) fixed on an inner surface of the peripheral housing(1, 2); and a loudspeaker unit comprising a first vibrating diaphragm, a voice coil, a magnetic circuit system (34, 35, 36) and a second vibrating diaphragm, wherein, the voice coil is coupled with the first vibrating diaphragm, the magnetic circuit system (34, 35, 36) is coupled with the second vibrating diaphragm, the voice coil is accommodated in a magnetic gap of the magnetic circuit system (34, 35, 36), and edges of the first vibrating diaphragm and the second vibrating diaphragm are fixed on the supporting member (5, 6, 37), wherein, the peripheral housing (1, 2), the supporting member (5, 6, 37) and the loudspeaker unit define a first front acoustic cavity, a second front acoustic cavity, and a rear acoustic cavity; the first front acoustic cavity comprises a space between the first vibrating diaphragm and a part of the peripheral housing (1, 2) close to the first vibrating diaphragm, and communicates with outside via the first sound hole of the peripheral housing (1, 2); the second front acoustic cavity comprises a space between the second vibrating diaphragm and a part of the peripheral housing (1, 2) close to the second vibrating diaphragm, and communicates with outside via the second sound hole of the peripheral housing(1, 2), wherein, the supporting member (5, 6, 37) comprises a first supporting seat and a second supporting seat fixed on the inner surface of the peripheral housing (1, 2), and a housing member fixed between the first supporting seat and the second supporting seat, and the edges of the first vibrating diaphragm and the second vibrating diaphragm are fixed on a side wall of the housing member, wherein, the rear acoustic cavity forms as a sealed hollow cavity and comprises a space between the first vibrating diaphragm and the second vibrating diaphragm and a space formed by the housing member and the peripheral housing (1, 2), an acoustic vent hole is formed on the housing member and enables the space between the first vibrating diaphragm and the second vibrating diaphragm to be communicated with the space formed by the housing member and the peripheral housing (1, 2). a peripheral housing (1, 2) provided with a first sound hole and a second sound hole; a supporting member (5, 6, 37) fixed on an inner surface of the peripheral housing(1, 2); and a loudspeaker unit comprising a first vibrating diaphragm, a voice coil, a magnetic circuit system (34, 35, 36) and a second vibrating diaphragm, wherein, the voice coil is coupled with the first vibrating diaphragm, the magnetic circuit system (34, 35, 36) is coupled with the second vibrating diaphragm, the voice coil is accommodated in a magnetic gap of the magnetic circuit system (34, 35, 36), and edges of the first vibrating diaphragm and the second vibrating diaphragm are fixed on the supporting member (5, 6, 37), wherein, the peripheral housing (1, 2), the supporting member (5, 6, 37) and the loudspeaker unit define a first front acoustic cavity, a second front acoustic cavity, and a rear acoustic cavity; the first front acoustic cavity comprises a space between the first vibrating diaphragm and a part of the peripheral housing (1, 2) close to the first vibrating diaphragm, and communicates with outside via the first sound hole of the peripheral housing (1, 2); the second front acoustic cavity comprises a space between the second vibrating diaphragm and a part of the peripheral housing (1, 2) close to the second vibrating diaphragm, and communicates with outside via the second sound hole of the peripheral housing(1, 2), wherein, the supporting member (5, 6, 37) comprises a first supporting seat and a second supporting seat fixed on the inner surface of the peripheral housing (1, 2), and a housing member fixed between the first supporting seat and the second supporting seat, and the edges of the first vibrating diaphragm and the second vibrating diaphragm are fixed on a side wall of the housing member, wherein, the rear acoustic cavity forms as a sealed hollow cavity and comprises a space between the first vibrating diaphragm and the second vibrating diaphragm and a space formed by the housing member and the peripheral housing (1, 2), an acoustic vent hole is formed on the housing member and enables the space between the first vibrating diaphragm and the second vibrating diaphragm to be communicated with the space formed by the housing member and the peripheral housing (1, 2).