The invention relates to a dual-sound basin thin speaker which comprises a basin frame with a basin-shaped cavity, a magnetic circuit structure arranged in the basin frame, and a main sound basin arranged at the periphery of the magnetic circuit structure, wherein the magnetic circuit structure is closely combined on the inner surface at the bottom of the basin frame; the edge of the main sound basin is supported on the edge of the basin frame, and a central hole wall of the main sound basin is closely combined with an outer wall of a sound coil of the magnetic circuit structure; a wiring board is arranged on the basin frame, and a lead wire of the sound ring of the magnetic circuit structure is connected with the wiring board; a locating support and an auxiliary sound basin are further arranged at the periphery of the magnetic circuit structure; and the bottom of the locating support is closely combined on the inner surface at the bottom of the basin frame, the auxiliary sound basin is positioned below the main sound basin, the edge of the auxiliary sound basin is supported on the top of the locating support, and a central hole wall of the auxiliary sound basin is closely combined with the outer wall of the sound coil of the magnetic circuit structure. The dual-sound basin thin speaker has artful, compact and rational structure, and can ensure compliance of a vibrating system, improve low-frequency response characteristics, rapidly discharge thermal energy and guarantee acoustic performance and reliability of the speaker while optimizing thickness.