Audio and video data sending method and audio and video data receiving method

The invention discloses an audio and video data sending method and an audio and video data receiving method, and relates to the technical field of smart home. The code rate of the audio and video data to be sent is adjusted according to a first packet loss rate carried by the abnormal request, the first packet loss rate is larger than a first threshold value, the first packet loss rate is used for indicating the packet loss rate of a first data packet of the sent audio and video data in unit time, and the code rate is used for indicating the imaging definition of the audio and video data; adjusting a first packet sending mechanism for sending the audio and video data to be sent to the receiving end by the sending end into a second packet sending mechanism; first prompt information is sent to the receiving end, audio and video data to be sent are sent to the receiving end according to the adjusted code rate and the second packet sending mechanism, and the first prompt information is used for indicating that th