The present disclosure discloses an acoustic output device. The acoustic output device may include at least one acoustic driver configured to generate sounds and a housing structure configured to carry the at least one acoustic driver. The housing structure may include a cavity, and the at least one acoustic driver may be arranged in the cavity and may divide the cavity into a first cavity and a second cavity. And the sounds generated by the at least one acoustic driver may be transmitted from the first cavity and the second cavity, respectively, pass through the housing structure, and form dual sound sources arranged on two sides of an auricle, respectively.