Abstract: In view of the characteristics of low-value intermediate products in catalytic cracking, the reaction performance of catalytic cracking of low-value products from three different sources to produce acetylene at high temperature was investigated in a self-made electromagnetic induction high-frequency and high-temperature cracking unit. Reaction temperature and residence time were main factors restricting pyrolysis of inferior oil at high temperature for acetylene production. Using light cycle oil from SINOPEC Beijing Yanshan Company as feed for high temperature cracking reaction, the results showed that at the conditions of a feed rate of 0.3 g/min, a reaction temperature of 800 ℃, and a residence time of 8 ms , the acetylene yield reached 7.90%. Hydrogen was by-product of LCO pyrolysis to produce acetylene, and yield of hydrogen reached 7.54% when the reaction temperature was 1 300 ℃ and the residence time was 50 ms. Increasing the content of alkane and hydrogen in the raw materials was beneficial to the formation of acetylene. Under the conditions of a feeding rate of 0.3 g/min, a reaction temperature of 1 400 ℃ and a residence time of 22 ms, the acetylene yields were 11.13% and 12.70% using hydrogenated LCO from SINOPEC Shijiazhuang Refing and Chemical Company and heavy cycle oil from SINOPEC Yangzhou Companyas feed, respectively.