The utility model relates to an airflow control system for a low-temperature furnace and a high-temperature furnace in a carbonization production line. The airflow control system comprises a wind speed sensor, an airflow control module, an alarm device, a high-precision waste discharge control valve and a high-precision air seal shielding gas control valve. The utility model aims to quantify the airflow conditions of the low-temperature furnace and the high-temperature furnace and realize real-time monitoring and alarming. When the airflow sensor senses that the airflow is too low or too high, the control system triggers the alarm device and controls the air seal protection gas control valve and the waste discharge control valve, so that the airflow is uniform, the pressure in the furnace is stable, and the purpose of stably controlling the airflow of the low-temperature furnace and the high-temperature furnace is achieved.