The invention discloses an infrared radiation temperature control method for a spraying production line, a plurality of catalytic heating plates are arranged in an infrared radiation furnace, any catalytic heating plate is provided with a temperature sensor, and the infrared radiation temperature control method comprises the following steps of: simulation temperature detection, contrast temperature recording, fine adjustment, synchronous temperature rise adjustment, calculation of the temperature regulation coefficient of each catalytic heating plate, catalytic heating plate fine-tuning reference selection, and temperature control. According to the method, temperature control correlation and real-time temperature monitoring of the catalytic heating plates can be achieved, overall temperature control adjustment is carried out through the correlation coefficient, the individual difference of the catalytic heating plates and the furnace chamber temperature difference adjustment requirements are met, the product is heated uniformly and stably, the curing stability of the product is improved, and the qualified rate of the product is greatly improved. And a reflectivity attenuation self-adaptive adjusting function is realized, so that the temperature of the furnace chamber is stable and uniform, the curing temperature is stable, and the phenomena of non-uniform curing and incomplete curing are prevented.