The present invention provides a surface treatment solution for producing a zinc-based plated steel sheet with a surface treatment film that does not contain a chromium compound in the surface treatment film and is resistant to discoloration by heat. , heat cracking resistance, corrosion resistance of the flat part, corrosion resistance after alkali degreasing, blackening resistance, stacking blackening resistance, water seepage resistance, solvent resistance, sweat resistance, coating adhesion and storage stability. excellent. The surface treatment liquid for zinc-based plated steel sheets of the present invention is characterized in that a silane coupling agent (A) having a glycidyl group, a tetraalkoxysilane (B), a zirconium carbonate compound (C), a glass transition Anionic polyurethane resin (D), vanadium compound (E), molybdic acid compound (F) and water at temperature (Tg) of 80°C to 130°C have pH of 8.0 to 10.0 and the addition amount of each component satisfies a predetermined relationship.