The invention discloses a search method of an objective function option, comprising the steps: receiving a search instruction sent out by a user; determining the current function options corresponding to the search instruction; and displaying subordinate function options corresponding to the current function option in a preview mode on the current interface, so the user can search the objective function option from the subordinate function options displayed on the current interface. Therefore, in the scheme of the invention, if the user wants to search the objective function option from the current function options displayed on the current interface, the user only needs to send out a search instruction, then the subordinate function options corresponding to the current function options can be displayed on the current interface, and the user can search the objective function option from the subordinate function options. Compared with the prior art of search layer by layer, the search method simplifies the steps for searching the objective function option by the user, reduces unnecessary operation and increases the user experience. The invention also discloses a search device of the objective function option, which also can realize the technical effect.