Provided are a mobile terminal management method, a mobile terminal management system, and a mobile terminal. Said mobile terminal management method comprises: acquiring a desired endurance time length; predicting an endurance time length according to a current power consumption rate and a current state of charge of a battery; judging whether a power consumption rate needs to be reduced according to the desired endurance time length and the predicted endurance time length; when it is judged that the power consumption rate needs to be reduced, determining a power consumption reducing scheme according to the desired endurance time length and the predicted endurance time length; and managing a mobile terminal according to the determined power consumption reducing scheme. In this disclosure, the user can set a desired endurance time length; using requirements of the user on the mobile terminal are satisfied as much as possible while saving power.