PROBLEM TO BE SOLVED: To provide a gelling agent for aqueous liquids, giving an aqueous liquid gel high in shape-retaining property at room temperature and at high temperature, excellent in transparency and excellent in storage stability at low temperature.SOLUTION: A gelling agent for aqueous liquids (D) includes a polymer (A), and a water-soluble transition metal compound (B), wherein (A) is a polymer containing as an essential constitutional unit, a radical-polymerizable monomer (a1) having a carboxyl group and/or 1,3-dioxo-2-oxapropylene group and the following radical-polymerizable monomer (a2). (a2): a carboxylic acid salt prepared by replacing the proton of the carboxyl group in (a1) with an onium cation or an alkali metal cation.
