The invention discloses a testing test system for a spectrum in the high temperature stage of the spontaneous combustion inflammation process of coal. The system comprises a constant-temperature furnace, a coal sample tank, a constant-temperature furnace lifting mechanism, an air supply system and a temperature control cabinet; the constant-temperature furnace comprises a constant-temperature furnace body, a constant-temperature furnace cover, a furnace hearth and a heating unit; the coal sample tank is composed of a tank body and a tank cover, and a coal sample tank quartz glass observation hole is formed in the middle of the tank body; the constant-temperature furnace lifting mechanism comprises a support frame, lifters, a motor, shaft steering gears, first transmission shafts, second transmission shafts and lifting bases, and four guiding columns are installed on the support frame; the air supply system comprises an air source, a drying tube, a pressure stabilizing valve, a gas mass flow meter and a preheating tube. The invention further discloses a testing test system for the spectrum in the high temperature stage of the spontaneous combustion inflammation process of the coal. According to the system and method, design is novel and reasonable, implementation, usage and operation are convenient, temperature control is precise, the coal sample molecular structure change condition of the coal in the high-temperature spontaneous combustion condition can be truly reflected, the practicability is high, and usage and popularization are convenient.