Recoverable high-effective formylic acid extracting agent

The present invention relates to a recoverable high-effective extracting agent for formic acid. It is a ternary mixed solvent (about 20-30% (v) of 7301 or N235, about 30-40% of acetophenone and about 40-50% of hydrogenated kerosene oil), and it is used in an aqueous solution containing formic acid (concentration is less than 2 mol/L), so that the formic acid can be effectively extracted, and its extraction rate can be up to 99-99.5%. When the extracted liquid is distilled and regenerated, and heated to 185-192 deg.C, the formic acid whose concentration is 82-86% can be obtained from the top of distillation tower, and its distilled yield can be up to 98-99.5%, and its regenerated solvent can be cyclically used.