A message processing method, device and system for Internet of Things are described. The method includes that: a gateway of the Internet of Things receives one or more operation messages transmitted by a plurality of transmitters for one or more operations of a terminal; and the gateway of the Internet of Things caches and pre-processes the received one or more operation messages in a message queue, and according to a processing result, sends at least one operation message in the message queue to a terminal. By the disclosure, the problems existing in the process of executing interactive operations on the terminal in the related art are solved, the energy consumption generated when the terminal executes the operation messages is saved, and the resource loss of the Internet of Things is reduced.