A data routing method used to implement data routing in a communications system in which a plurality of networks that use different data bearer protocols are integrated is produced. The method includes: a routing apparatus receives data by using an input port, and determines a data bearer protocol attribute of the input port; the routing apparatus determines an attribute of the data based on the data bearer protocol attribute of the input port; the routing apparatus determines based on the attribute of the data, a data bearer protocol attribute of an output port used to output the data; and determines based on the data bearer protocol attribute of the output port, the output port used to output the data, and outputting the data by using the determined output port.