The invention discloses a wireless network setting method based on sound wave or light wave communication, and the method is used for wireless network configuration of a device of the Internet of Things. The setting method includes the steps that an intelligent device automatically obtains configured wireless network information and encodes the wireless network information based on a sound wave or light wave communication mode, the device of the Internet of Things receives encoded signals, the signals are decoded based on the same sound wave or light wave communication mode to obtain decoded wireless network information, and a wireless network is automatically connected according to the obtained wireless network information. Through the wireless network setting method, a user of the device of the Internet of Things does not need to input the wireless network configuration information manually or add excess communication devices either, and wireless network connection of the device of the Internet of Things can be achieved, so that device cost is effectively reduced, and user operation is facilitated.