PROBLEM TO BE SOLVED: To provide a liquid aroma composition for flush toilets, having excellent antifouling and germicidal properties, forming an appropriate thickening system even when containing many perfumes and having no problem on storage stability.SOLUTION: The liquid aroma composition for flush toilets contains, in a specific condition, (a) a polymer which has a ratio of monomer units having one or more kinds of groups selected from amino groups and quaternary ammonium groups to total monomer units being 10-100 mol% and a weight average molecular weight of 8,000-40,000, (b) an amphoteric surfactant, (c) a cationic surfactant, (d) a perfume and (e) a biguanide based compound. The total content of (b) and (c) is 10-25 mass%, a mass ratio (b)/(c) of (b) to (c) is 2-20, and the viscosity at 20°C is 90-500 mPa s.
