A novel method for synthesizing 2,3-difluorophenylbutyl ether, which directly utilizes n-butanol and potassium hydroxide for etherification to generate ether compounds, and then synthesizes 2,3-difluorobenzene through processes such as reduction, diazotization and deamination Butyl ether, the process method is simple, the operability is strong, and the cost is also greatly reduced.