Abstract: The present invention relates to the field of communication technology, and particularly to a data distribution method, a data distribution device and a heterogeneous network. The data distribution method comprises: obtaining, via a data distribution device, cellular network access information and wireless local area network access identification information of a user terminal; obtaining, via the data distribution device, cellular network status information and wireless local area network status information; and judging, in combination of the obtained information and distribution policy, that downlink service is required to be distributed to a wireless local area network by the data distribution device, and guiding a data package in the downlink service needed to be distributed, to be distributed to the wireless local area network and transmitted to the user terminal.