To provide a conjugated fiber affording a product such as a nonwoven fabric having a sufficiently soft feeling and heat bonding performances without a feeling of loss of resilience and to provide the nonwoven fabric having the performances.

The core-sheath type conjugated fiber comprises a polyester component in which a phosphorus compound represented by a specific formula in an amount of 0.3-1.5 mol% based on the whole acid component is copolymerized as a core component and a polyolefin component is arranged in a sheath component. The singe fiber fineness is 0.5-3.3 dtex.