A method for natural language query processing in an internet of things (IoT) system and an electronic device thereof are provided. The method includes receiving a natural language query including a plurality of attributes. Further, the method includes determining, by the IoT query engine, things from a plurality of things to be queried from a unified metadata based on the plurality of attributes. The unified metadata includes information about the plurality of things connected in the IoT system. Further, the method includes sending, by the IoT query engine, at least one structural query to each of the determined things. The at least one structural query is generated based on the plurality of attributes and the determined things. Further, the method includes retrieving, by the IoT query engine, results from each of the determined things.