Switch joint with reliable connection and boiler

The invention discloses a switch joint with reliable connection and a boiler. The switch joint comprises a plug and a socket, wherein the plug comprises a plug fixing base and at least one upper connecting rod which is fixed on the plug fixing base; the socket comprises a socket panel provided with jacks corresponding to lower tail ends of the upper connecting rods, a sealing gasket which is arranged on a lower side face of the socket panel and is provided with slot holes, a socket box which is arranged below the sealing gasket, and lower connecting rods which are positioned below the slot holes; the lower connecting rods are movably connected to the bottom of the socket box in an axial direction through an elastic structure, so that an upper end face of an upper tail end of each lower connecting rod is in a contact connection with a lower end face of a lower tail end of one upper connecting rod. By adopting the switch joint, the substantial defects of poor contact and inconvenience in plugging and unplugging