The present invention relates to the field of smart home technology, in particular to a smart home sleep adjustment method and system. Presetting the body state of the user and the operation mode of the smart home device corresponding to the body state; collecting user's body information data; processing the body information data and judging the body state of the user. The operation mode of the smart home device is adjusted according to the body state of the user. Not only can sleep data be monitored and counted, but also sleep environment can be provided or improved actively and intelligently, so as to achieve the purpose of improving sleep. At the same time, it can be adjusted according to the body state of the user, so that the user can stay in bed comfortably in the awake state, and can quickly enter sleep when falling asleep, and enter deep sleep, so as to optimize the user experience.