A double-layered fishing line is disclosed, which includes a core wire and a tubular metallic spring coil. The tubular metallic spring coil is windingly wrapped on an external circumference of the core wire, so that the core wire can be prevented from being gnawed off by fish teeth. Accordingly, with the excellent flexibility of the core wire and the tubular metallic spring coil, conditions such as a bent setting and entanglement can be avoided.一種雙層釣魚線,包括一芯線與一管狀金屬彈簧圈,該管狀金屬彈簧圈繞覆於芯線的外周。依管狀金屬彈簧圈保護芯線不被魚類的牙齒咬斷。且芯線與管狀金屬圈皆具有極佳的可撓性,不虞彎摺定型及糾結。100‧‧‧雙層釣魚線110‧‧‧芯線120‧‧‧管狀金屬彈簧圈121‧‧‧第一端環122‧‧‧第二端環130‧‧‧管體200‧‧‧端部魚鉤300‧‧‧中置魚鉤400‧‧‧限位環500‧‧‧夜光珠700‧‧‧轉環
