Embodiments of the invention provide a method and a system for achieving mobile network service fulfillment and relate to the technical field of communication. The invention receives the service order information sent by the front end system, performs initial verification on the service order information, analyzes and / or decomposes the service order information passed through the initial verification, generates the service order information, and matches the service order information with the mobile network template, according to the matching results, activation work orders are generated, according to the activation work orders, network element work orders are generated, the network element work orders are sent to the network element server to the construction, and finally according to the construction results, acknowledgement of orders is carried out. In the process of mobile network service fulfillment, the IOM or SPS system carry out the service fulfillment process scheduling and activation, no longer through the NAS system, which solves the problems that complexity of the fulfillment process leads to the low processing efficiency, the large interface abnormal probability, and the data redundancy, streamlines the system, reduces duplication of work, improves the processing efficiency, and reduces the abnormal interface probability and the data redundancy.