The invention discloses a method and a device for regulating running parameters of a unit, and the unit. The method comprises the following steps of: judging whether the current running state of the unit reaches a preset state, wherein the preset state is a state capable of triggering a fault protection mode; and regulating the running parameters of the unit after the running state reaches the preset state. By virtue of the method disclosed by the invention, the unit can be prevented from triggering the fault protection mode frequently in subsequent use by regulating the running parameters ofthe unit when the unit is in a state capable of triggering the fault protection mode, thus the use experiences of users are improved, and complaints of the users are reduced.