The embodiments of the present disclosure provide methods and Internet of Things systems for controlling automatic odorization of smart gas device management. The method may include obtaining gas data of a first gas sample at a first position of a smart gas pipeline network based on a sampling device; odorizing at a second position of a smart gas pipeline network based on odorization parameters through an odorization device; obtaining inspection data of a second gas sample at a third position of the smart gas pipeline network based on an inspection device; updating the odorization parameters based on the inspection data through a device parameter remote management module; and odorizing at the second position of the smart gas pipeline network based on the updated odorization parameters through the odorization device.