An acousto-optical baby toy includes a cantilever control unit, an acousto-optical unit connected with the cantilever control unit, and a support unit connected with the cantilever control unit. The acousto-optical baby toy further comprises a remote controller connected with the circuit board of the cantilever control unit in a wireless manner. Thus, the acousto-optical baby toy presents the sound and image messages of the baby cot in a wireless manner so that the parents can operate the acousto-optical baby toy in a remote control manner to watch the instant condition of the baby placed in the baby cot. In addition, the acousto-optical baby toy indicates the environmental messages, functions as a night lamp, has an interactive acousto-optical effect and provides a vibrating function, thereby facilitating the parents taking care of the baby in the baby cot.