Root cause analysis method and device and medium

The invention provides a root cause analysis method and device and a medium, relates to the technical field of computers, and is used for solving the problem of how to carry out root cause analysis according to resource related information in alarms, and the method comprises the following steps: obtaining all real-time alarms in a real-time alarm slice; all the real-time alarms are benchmarked according to the alarm resource type of each real-time alarm, the fault propagation chain is formed by connecting a plurality of first nodes in sequence, and each first node corresponds to one resource type; and judging a root cause alarm in a plurality of real-time alarms hitting a certain section of fault propagation chain. According to the method, the resource type information contained in the real-time alarms in the slices is utilized, the fault propagation chain is formed according to the network resource type in advance through benchmarking, the root cause alarm is judged in the multiple real-time alarms hitting t