Dynamic scheduling method and system based on space-based distributed satellite cluster

The invention provides a dynamic scheduling method based on a space-based distributed satellite cluster. The method comprises the following steps: calculating priority scores of Pods to be scheduled according to service types, resource requirements, urgency degrees and service quality, and sorting the Pods; scheduling the Pod to be scheduled in sequence according to the sequence, judging whether satellite cluster resources are sufficient or not, and if yes, deploying the current Pod to the node with the most sufficient resources in the satellite nodes capable of meeting the Pod resource requirements; if not, preemptive scheduling is carried out according to the preemptive overhead, and if the Pod with the preemptive overhead smaller than that of the current Pod in the service exists, the service of the Pod with the minimum preemptive overhead is stopped, resources are released to the current Pod, and the Pod with the terminated service is returned to the waiting queue; otherwise, the current Pod returns to th