The invention discloses a service-oriented packaging method and system of cloud diagnosis resource, comprising the steps of establishing a cloud diagnosis resource standard description template library and XML resource attribute document library; describing the diagnosis resource according to description template in the cloud diagnosis resource standard description template library; describing the diagnosis resource according to implementation template in the cloud diagnosis resource standard description template library to get implementation classes of diagnosis resource; implementing the implementation calls of diagnosis resource by calling the implementation interfaces corresponding to the diagnosis resource according to the description requirements of the input, output and executive function of diagnosis resource to implement the virtualization packaging of diagnosis resource. By taking advantages of service-oriented packaging method and system of cloud diagnosis resource in this invention and the virtualization of cloud diagnosis resource, a more comprehensive and deeper diagnosis resource sharing is implemented, a large-scale virtual cloud diagnosis resource pool of high expansibility and flexibility is formed, and equipment diagnosis resources are allocated dynamically and fleetly as required to improve the diagnosis capability of the equipments.