The invention relates to a charging method capable of automatically distributing output power as required for a multi-charger charging machine and the charging machine. The charging machine comprises a resource distribution controller, wherein the resource distribution controller is connected with multiple charger controllers in a communication manner; each charger controller is connected with multiple charging modules in a communication manner; each charging module is connected with a power supply grid and is connected with multiple charger plugs through a direct current high voltage relay; a resource distribution manager is stored with IDs and position numbers of all the charging modules and IDs of the charging modules capable of charging the respective charger plugs and is used for managing charging resources; the charger controllers are used for controlling the corresponding charging modules to realize charging through the charger plugs. The charging method can automatically adjust the charging output power according to a charging requirement of a user; furthermore, the multiple chargers can share resources of the charging modules; therefore, idling of the charging resources is effectively avoided, and an automobile can be charged in the fastest way.