Data processing system and satellite downlink code stream processing method thereof

The invention provides a data processing system and a satellite downlink code stream processing method thereof. The method is executed by a data processing system, the data processing system comprises a resource scheduling node, a merging processing node and a plurality of data processing nodes, and the method comprises the following steps: firstly, when any ith data processing node in the plurality of data processing nodes is in an idle state, the resource scheduling node performs resource scheduling on the ith data processing node according to the data processing performance of the ith data processing node; intercepting a sub-data stream from a satellite downlink code stream obtained by a satellite signal demodulator according to a time sequence, and sending the sub-data stream to the ith data processing node; then, the ith data processing node carries out preset processing operation on the sub-data streams to obtain processing results corresponding to the sub-data streams, sends the processing results to t