▎ 摘　　要

NOVELTY - Synthesizing 2-chloro-4-fluorotoluene based on honeycomb filler comprises taking anhydrous hydrofluoric acid as solvent, taking 3-chloro-4 methylaniline as raw material, using dinitrogen trioxide as diazotization reagent, carrying out diazotization reaction, directly performing thermal decomposition reaction, allowing to stand and layering after finishing reaction, adjusting the organic layer to neutral by sodium hydroxide solution, performing steam distillation, layering at room temperature and rectifying the organic layer to obtain the target product. USE - The 2-chloro-4-fluorotoluene is useful in color display device. ADVANTAGE - The method: uses dinitrogen trioxide as the diazotization reagent; reduces the amount of solid waste; does not discharge high-salt wastewater, which reduces the production cost and is more environmentally friendly.