PROBLEM TO BE SOLVED: To provide a long fiber nonwoven fabric that is excellent in uniform hydrophilicity, liquid permeability and productivity.SOLUTION: A long fiber nonwoven fabric 1 comprises a thermoplastic fiber and has a fiber treatment agent attached thereto, the fiber treatment agent contains a polyorganosiloxane and a surfactant, and the surfactant is, preferably, at least two selected from an anion surfactant and a nonionic surfactant, for example, 1) two anion surfactants or 2) a combination of at least one anion surfactant and at least one nonionic surfactant.
