According to a high altitude area composite insulator operation environment analog system designed by the utility model, an outlet of a dusting machine of the high altitude area composite insulator operation environment analog system is communicated with an adjustable draught fan; an outlet of the adjustable draught fan is communicated with a test tank through an air channel; an outlet of a fog generator is also communicated with the test tank through the air channel; control ends of the dusting machine, the adjustable draught fan, the fog generator, rainfall drainages, a temperature adjusting device and an air pressure control unit are connected with a control signal output end of an analog environment control module through an actuating mechanism master control module. Signal output ends of a temperature sensor, a humidity sensor, a rainfall amount tester, a barometer, a wind speed wind direction sensor and a dust sensor are connected with a signal input end of an analog environment control module. The system can simulate an operation environment of composite insulators in high altitude areas, so that researches on the high altitude area operation environment of the composite insulators are facilitated.