The disclosure provides a life assistance system and method, and an automatic liftable chair. In the life assistance system for assisting a user in the action of standing up, the assistance of the action of standing up and the inhibition of reduction of a user physical power are achieved, and a user mental burden is reduced. In the life assistance system which has the automatic liftable chair and an autonomous mobile robot connected to the automatic liftable chair via a network and assists the user in the action of the standing up from the automatic liftabel chair, when the autonomous mobile robot receives an assisting instruction of standing up, the automatic liftable chair executes a first assisting action. When a load applied to a handle part of the autonomous mobile is detected, the automatic liftable chair executes a second assisting action.