The invention discloses a reaction type VOCs absorbent. The reaction type VOCs absorbent comprises the following components by mass percent: 92% to 97% of water, 0.2% to 1% of a surfactant, 0.5% to 1% of inorganic salt and 0.2% to 1% of an organic matter decomposing agent, wherein the surfactant is at least one in castor oil sodium sulfonate, sodium sulpho methyl stearate, Tween 20, Tween 80, alkyl glycoside, sodium citrate and sodium dodecyl benzene sulfonate; inorganic salt is at least one in sodium carbonate, potassium carbonate, sodium metasilicate, sodium chloride, potassium chloride and ammonium chloride; and the organic matter decomposing agent is at least one in cysteine hydrochloride, arginine, lysine, histidine, 2-imidazolidone, acethydrazide and adipic dihydrazide. The reaction type VOCs absorbent has the advantages that multiple components in VOCs can be treated at the same time, the removing efficiency for volatile organic matters is high, the organic matter decomposing agent in the components of the absorbent can degrade organic exhaust gas into CO2 and water or other micromolecules, the raw materials are wide in source, the cost is low, and follow-up treatment is simple.