The invention relates to a treatment method for exhaust gas containing EO and PO and mainly solves the problem that in the prior art, the consumption of washing water is great and the wastewater after washing is hard to treat. The problem is better solved by adopting the technical scheme that the treatment method for exhaust gas containing EO and PO comprises the following steps that EO/PO containing exhaust gas enters a primary effect exhaust gas adsorption tower T-101 to be absorbed, exhaust gas on the top of the tower enters a secondary effect exhaust gas absorption tower T-102 to be washed, and the washed exhaust gas is emptied from the top of the tower by reaching the standard; a tower bottom of the primary effect exhaust gas adsorption tower T-101 enters a primary effect hydration reactor R-101 to react, and a part of barren liquor after reaction returns to the top of the primary effect exhaust gas adsorption tower T-101 through a heat exchanger E-101; and the part of tower bottom phase of the secondary effect exhaust gas absorption tower T-102 enters a secondary hydration reactor R-102 to react and remove EO/PO in the wastewater through catalytic hydration, and the barren liquor after reaction cooled by a lithium bromide freezer U-101 is delivered to the top of the secondary effect exhaust gas absorption tower T-102. The treatment method can be used for treating ethylene oxide/propylene oxide-containing exhaust gas.