A thermoacoustic device comprise a substrate, a number of thermoacoustic units on the substrate, a number of switches, a driving integrated circuit, a scanning integrated circuit, and a common electrode. The switches are electrically connected to the thermoacoustic units. Each of the switches is electrically connected in series between the first electrode and the driving integrated circuit through a driving electrode. Each of the switches is electrically connected to the scanning integrated circuit through a scanning electrode. The common electrode is electrically connected to the second electrode of the number of thermoacoustic units.