Embodiments of the present disclosure provide a method for managing smart gas work order implementation and IoT system, the method being executed by a smart gas management platform, comprising: obtaining gas work order information and user information from a library of work orders to be assigned; and determining an implementation priority of gas work orders based on gas work order information and user information; determining the implementation scheduling scheme for gas work order based on implementation priority; matching a pre-processing scheme for gas work order through a vector database based on at least one of work order type, fault type, and implementation scheduling scheme; and executing the pre-processing scheme at pre-processing time and pushing the pre-processing result to a work terminal of the implementer; determining the implementation scheduling scheme of gas work order according to the implementation priority of gas work order may reasonably arrange gas work order and improve the processing efficiency of gas work order. The implementation scheduling scheme and pre-processing scheme are determined based on various information, which considers the possible impact of multiple factors, improving the accuracy of processing of the gas work order.