The invention provides a UAN data transmission method based on parallel cooperation space-time multiplexing, comprising the following steps: odd-numbered source nodes in an equidistance linear topological acoustic monitoring network transmit data to even-numbered source nodes in parallel, and each even-numbered source node combines the received data and a self-generated data packet to form a new data packet and sends the new data packet to next source node; and cyclical combination and sending are carried out until all data is transmitted to a destination node. By adopting the method of the invention, the time delay and power consumption of a large-scale intensive acoustic network can be reduced, the service life can be prolonged, and the efficiency of the network can be improved.