The present disclosure provides a smart device function guiding method and system, wherein the method comprises: obtaining a user's speech data and obtaining an operation instruction corresponding to the speech data; judging whether the operation instruction complies with a preset guidance condition, and sending a guidance speech to the smart device if the operation instruction complies with the preset guidance condition. The solution of the present disclosure can be employed to improve the efficiency of performing function guidance through speech interaction as compared with the manner of performing the function guidance through the APP or providing simple speech function guidance in the prior art.