A liquid detergent of the present invention contains: component (a): a nonionic surfactant which contains compounds represented by the following formula (1) wherein an average value of m in formula (1) ranges from 5 to 20； and in which a ratio of the compound wherein R1 is a double bond-containing unsaturated hydrocarbon group is equal to or greater than 45% by mass with respect to a total amount of the component (a), and a ratio of the compound wherein R1 is an unsaturated hydrocarbon group having two or more double bonds is equal to or greater than 4% by mass with respect to a total amount of the compounds of formula (1) wherein R1 is an unsaturated hydrocarbon group； and component (b): an anionic surfactant.R1CO(EO)mOR2 ； ；(1)wherein R1 is a saturated or unsaturated hydrocarbon group having 15 to 17 carbon atoms； EO is an oxyethylene group； m is a positive integer； and R2 is an alkyl group having 1 to 3 carbon atoms.
