A query processing method is disclosed. A query processing method according to an embodiment may comprise the steps of: displaying a first object and a second object; acquiring a user input indicating a relationship between the first object and the second object; displaying a first relationship structure between the first object and the second object on the basis of the user input; and transmitting, to the server, a query including a second relationship structure between at least one first node corresponding to the first object and at least one second node corresponding to the second object, which corresponds to the first relationship structure.