The invention provides a fault diagnosis method and device and electronic equipment, is applied to the power industry, and belongs to the technical field of production business system fault diagnosis.The embodiment of the invention provides a fault diagnosis method and device and electronic equipment, and the method comprises the steps: collecting the operation data of a service system and the operation data of network equipment associated with the service system according to a pre-established power production service application model when receiving the fault alarm information of the servicesystem; subjecting the collected operation data to all-round network fault correlation analysis, and network-level fault diagnosis and positioning can be rapidly and accurately carried out on the power production service application, so that the efficiency and the performance of the communication network are improved.