The invention discloses a tunnel furnace temperature and humidity regulation and control system for coil panel processing and a method thereof. The system comprises a multi-region temperature and humidity regulation and control module, an intelligent control center, a data acquisition and analysis module and an inter-region cooperative control module. The multi-area temperature and humidity regulation and control module comprises a subarea temperature and humidity sensor group and an independent regulation and control execution unit, and is used for controlling the temperature and the humidity of different areas of the tunnel furnace; a heater, a humidifier and a cooling device arranged in each area in the tunnel furnace can independently respond to regulation and control requirements; and the intelligent control center is based on a neural network and a fuzzy control algorithm module, and is used for dynamically adjusting the temperature and humidity set values of each region, and comparing real-time monitoring data with a process target value to generate an optimization control instruction. Each area is provided with an independent temperature and humidity sensor and an independent regulation and control execution unit, the working states of the heating device, the humidifying device and the cooling device can be adjusted according to actual needs, and it is ensured that the temperature and humidity of each area are in an ideal state.