The invention proposes an energy storage power station battery management system having an intelligent fire early-warning function and an early-warning method, which are applicable to management of a container-type energy storage power station. The system comprises a power battery pack, an intelligent fire early-warning module and a battery management module, wherein the battery management module is connected with the power battery pack and the intelligent fire early-warning module, the intelligent fire early-warning module is arranged in a pre-fabricated bind at a fixed point and is used for performing mobile sensing and detection, the detected sensor information is sent to the battery management module, the battery management module is used for acquiring a voltage and a temperature of the battery and analyzing and judgment by combining the sensor information transferred from the intelligent fire early-warning module, and warning or fire extinguishing device is started when a preset early-warning condition is met. The battery management system employs a three layer control framework, fire extinguishing can be performed within first time when a fire occurs, and by minimum unit interference control, omnibearing and safe monitoring and management of the energy storage battery are achieved.