The embodiment of the invention, which overcomes the technical problems that long-term transmission delay for the whole network cannot be realized, and the optimal configuration of available channel resources cannot be considered, discloses an intelligent power communication service differential scheduling method based on QoS. The method of the embodiment of the invention includes the following steps: the communication network state is calculated according to the channel availability of the communication network and predetermined SU priorities; the decision function of the communication network state is determined based on the situation of distributing channels to a SU; the transmission time delay value of a data packet in the communication network is calculated and evaluated based on the communication network state and the decision function; the minimal error function is calculated according to the communication network state and the transmission time delay value subjected to neural network training; and the minimal error function is invertedly input to a neural network to adjust the weight parameter of the neural network dynamically, so that the transmission time delay value of the data packet in the communication network becomes minimum.