Abstract: The present invention relates to the field of communications network technologies, and discloses a method and an apparatus for adjusting a network mode, to resolve a problem that a security risk exists in a home network. In embodiments of the present invention, person identity information in a preset range is obtained, where the person identity information includes person identity features of all persons in the preset range; then, when it is determined, according to the person identity features, that there is a non-family member in the preset range, a guest mode is enabled. The solutions provided in the embodiments of the present invention are applicable to mode adjustment of a router.