The invention discloses a fire fighting method of a container type lithium ion battery energy storage system. The fire fighting method of the container type lithium ion battery energy storage system utilizes an automatic fire extinguishing system and an early warning system, can separately initiate three-stage fire-extinguishing responses in different stages of fire happening and spreading in energy storage containers, such as single battery fire, battery module fire and energy storage system fire, and sends out three-stage warning signals, that is, through a fire detection and fire extinguishing system, a fine water mist fire extinguishing system and a water spray and water curtain system, the single battery fire as well as the spread of the fire between a battery cabinet and even the containers can be effectively restrained and prevented; and meanwhile, terminal monitor personnel takes different emergency measures through the different early warning signals, so that the safety and efficient operation of the container type energy storage system is ensured.