Abstract: To resolve the problems of low resource utilization efficiency in China's current furfural manufacturing industry, a clean process of furfural production was preliminarily studied by injecting water into an autoclave by a constant-flux pump to simulate the catalytic hydrolysis process of corncobs with sulfuric acid in the furfural manufacturing industry. The effects of steam flow, reaction time, sulfuric acid concentration and reaction temperature on the yield of furfural were analyzed and discussed. The results showed that, by increasing the steam flow, controlling the reaction time (t) slightly longer than the xylose disappearance time (t_x), controlling the sulfuric acid concentration and appropriately raising the reaction temperature so as to ensure the residence time (τ) shorter than or equal to the optimized reaction time (t_opt), the yield of furfural could be significantly improved. Under the conditions of steam flow 10 mL/min, reaction time 4 h, sulfuric acid concentration 0.25%, and reaction temperature 180 ℃, the yield of furfural reached as high as 80.84%, 15%-20% higher than that of the current industrial process.