The embodiment of the present invention provides a power control method and device in a charging process. The power control method comprises a step of identifying the type of a connected charger; a step of determining the charging parameter corresponding to the type of the charger, a step of controlling the output power of the charger according to the charging parameter, wherein the output power of the charger does not exceed the maximum output power of the charger. In the embodiment of the present invention, through identifying the type of the charger and determining the relevant charging parameter of the charger according to the type of the charger, the output power of the charger can be controlled according to the charging parameter in the charging process, thus the output power of the charger does not exceed the maximum output power, especially in the condition of high voltage fast charging, the charging time is shortened, and the safety of the charging process is improved.