The invention relates to a device and a method for automatically playing audio advertisements. The device for automatically playing the audio advertisements comprises a power supply module, a
signal detection module, a switch control module, a data storage module, a data play module and a
data transmission module, wherein the
signal detection module comprises one or more of an
infrared inductive probe for acquiring an
infrared trigger
signal, a sound inductive probe for acquiring a sound trigger signal, a photosensitive inductive probe for acquiring an optical trigger signal, and a
radio frequency identification inductive probe for acquiring an identification code signal; and the
data transmission module comprises at least one of a wired transmission unit and a
wireless transmission unit.The device for automatically playing the audio advertisements has the function of automatically and accurately playing the audio advertisements, can greatly enrich the propagation
modes and propagation means of an advertisement market, and can be widely applied to places such as public spaces, elevators, commercial passageways, commercial centers, service facilities and the like.