The invention discloses a high-temperature high-pressure gas-liquid dyeing machine and a control method thereof. The high-temperature high-pressure gas-liquid dyeing machine comprises a main cylinder, a cloth lifting wheel, an airflow nozzle, a dyeing liquid nozzle, a heat exchanger, a main dyeing liquid pump and a fan component, and the airflow nozzle and the dyeing liquid nozzle are separated and can conveniently and quickly control parameters of airflow and dyeing liquid flow independently according to characteristics of to-be-dyed fabric. The airflow nozzle is positioned in front of the dyeing liquid nozzle, so that the wound fabric can be blown fluffily by high-pressure airflow, dyeing liquid spraying and penetrating is performed afterwards, using efficiency of dyeing liquid is improved greatly, leveling performance and dye yield rate of dyeing are improved, dyeing time is reduced, total consumption of auxiliaries and dye is lowered, and total COD quantity is lowered effectively. By the high-temperature high-pressure gas-liquid dyeing machine, more uniformity in dyeing can be realized, energy consumption of a gas-liquid split-flow dyeing machine is lowered, and the objectives of energy conservation and environment protection are achieved.