The invention belongs to the field of chemical industry, and particularly discloses an absorbent absorbing gas containing epoxide. The absorbent is one or the mixture of ammonia water and alkylol amine. The absorbent has the benefits that ammonia water, monoethanolamine, diethanol amine, isopropanolamine, diisopropanolamine or a water solution of the monoethanolamine, diethanol amine and isopropanolamine, diisopropanolamine is used as the absorbent to absorb the gas containing epoxide, through the utilization of the characteristic that the ammonia water, the monoethanolamine, the diethanol amine, the isopropanolamine, the diisopropanolamine or the water solution is very easy to react with the epoxide to generate a compound with high boiling point and having less possibility of volatilization, the ammonia water, the monoethanolamine, the diethanol amine, the isopropanolamine, the diisopropanolamine or the water solution is used as the absorbent to absorb the gaseous epoxide, and a substance formed after absorption reaction can be used as a product or raw material, so that the resource is saved, and the absorptivity is larger than 98.5%.