An aqueous ink for inkjet printing which includes a pigment, a compound represented by formula (1) and/or a compound represented by formula (2): R1—O—(CH2CH2O)n—H  (1) R1—O—(CH2CH2O)m—R2  (2) wherein R1 and R2 are each an aliphatic group having 2 to 5 carbon atoms or an alicyclic group having 3 to 5 carbon atoms, and n and in are each an average molar number of addition of 6 to 9, and water in a content of 50 to 65% by weight. The total content of the compound represented by formula (1) and the compound represented by formula (2) is 10 to 30% by weight. The aqueous ink is excellent in the curl prevention after print and print density as well as in the storage stability. In a method of inkjet-printing images using the aqueous ink on plain paper by one-pass print, the water content in the aqueous ink which is jetted onto unit area of the plain paper is regulated within 0.2 to 1.0 mg/cm2.