Abstract: On the basis of existing near infrared(NIR) detection technologies both at home and abroad, a pulverized coal calorific value detection system based on near infrared was designed. 100 pulverized coal samples were selected to create the near infrared model of pulverized coal colorific value, and then 50 samples of the validation set were used for validation analysis on the precision and stability of the model. It was turned out that the correlation coefficient between the forecast value and real value of pulverized coal colorific value was up to 0.995 8, with relative deviation less than 2%. The result indicated that the system had a good forecast precision and stability, could meet the demands for rapid detection to the pulverized coal calorific value and the system was characterized by small volume, simple structure, convenient operation and had a very good transportability.