The invention discloses a non-contact type opening/closing split induction heating device for rail welded joints, which comprises a left heating device and a right heating device corresponding to a rail 5 and is characterized in that each of the left heating device and the right heating device comprises a heating module and a cylinder, wherein the heating module is connected with the cylinder through a fixing rod. According to the novel non-contact type opening/closing split induction heating device for rail welded joints, disclosed by the invention, the cylinders drive opening/closing split coils to be switched off/switched on. Because a left heating coil and a right heating coil do not have fixed points and contact points when the opening/closing split coils are switched on, two coils are independently subjected to induction heating, so that the coils can be switched off/switched on by one key. The trouble of disassembling and assembling fixed contact points and the problem of conduction of fixed points caused by switching on and disassembling the coils many times are solved. The working efficiency and safety are greatly increased.