The invention discloses a function inquiry display system for a wireless router. The function inquiry display system comprises a wireless router, a mode inquiry module, a function inquiry module, a file module, a matrix table and a display module, wherein the wireless router is used for inquiring a functional file module through the mode inquiry module and the function inquiry module, so that a matrix can be displayed through the display module. The invention further discloses a function inquiry display method for the wireless router. The function inquiry display method comprises the following seven major steps of: inquiring the working mode of the wireless router; determining the current working mode of the wireless router; selecting the functional state of the wireless router in a current mode; inquiring the function of the wireless router in the current mode; positioning a matrix; inputting the obtained matrix in the display module; and displaying the matrix. Due to the adoption of the system and the method, accurate matching of the functional information of the wireless router in a 3G (third generation) mode, a WIFI (Wireless Fidelity) module, a wired broadband mode and a network forbidding mode is supported and realized, the switching accuracy of equipment modes is increased, and the product reliability is enhanced.