Provided is a wireless transmission system which can transmit data accompanying video/audio by a different transmission method depending on the characteristic of the data in a wireless transmission environment where the transmission band is narrow and a transmission error is easily caused. The wireless transmission system includes: a wireless receiver (3) connected to a sink device (4); and a wireless transmitter (2) connected to a source device (1). A wireless communication is performed between the wireless receiver (3) and the wireless transmitter (2) so that video and audio are outputted from the source device (1) to the sink device (4). The wireless receiver (3) and/or the wireless transmitter (2) categorizes the data accompanying the video and the audio in accordance with the characteristic thereof and transmits the accompanying data by using a different transmission method depending on the categorization.