Method and device for setting light level

Provided are a method and a device for setting light level. The method comprises: acquiring present light level and required light level of a use-end of a to-be-set runway; determining whether the present light level is the same with the required light level, if the present light level is the same with the required light level, not sending a set command, if the present light level is not the same with the required light level, modifying the present light level of the use-end of the to-be-set runway to the required light level. The method and the device for setting light level can replace hardware devices used for setting light level of a present aerodrome automatic meteorological observation system, thereby greatly saving hardware maintenance cost, and the device is low in failure rate, and normal operation of the aerodrome automatic meteorological observation system can be ensured.