Aqueous solution capable of absorbing and collecting carbon dioxide in exhaust gas with high efficiency

Disclosed are: an aqueous solution for absorbing and collecting carbon dioxide from a gas containing carbon dioxide, characterized by comprising 50-70 wt% of a secondary amine compound represented by general formula [1] and a surfactant; and a method for absorbing and collecting carbon dioxide using the aqueous solution. (In the formula, R represents a linear or branched alkyl group having 3-5 carbon atoms.)