Low-delay adaptive network live broadcast system

The invention discloses a low-delay adaptive network live broadcast system, comprising a camera, a server and a user terminal; wherein at least one camera and at least one server are provided, each server is connected to more than one camera, the camera collects data stream and pushes the collected data stream to the server, and the server records a relation of the data stream and the camera through a channel; when the user terminal obtains the data stream from a certain server through the channel, if the server has this channel, the server directly pushes the data stream collected by the camera corresponding to the channel to the user terminal to be displayed, and if the server does not have the channel, the server obtains the channel from other servers and forwards the corresponding data stream to the user terminal to be displayed. The system separates the operation of receiving the data stream and pushing the data stream, asynchronously achieves the forwarding process and dynamically adjusts the size of a buffer queue, so that the transmission efficiency is high and the delay is small; and multichannel and concurrent access of a large number of users can be supported.