Kettle used for boiling beverage

A kettle used for boiling beverage comprises a shell body. A base is arranged at the bottom of the shell body, and a top cover is arranged on the top portion of the shell body. An interior container is fixed at the inner bottom of the shell body, and an insulation board is fixed at the bottom of the interior container. The canteen used for boiling the drink is characterized in that the interior container is fixedly connected with the insulation board in spin-locked mode or the interior container is attached on the insulation board through bolts. A funnel assembly, a upper filter layer, a seal ring are arranged inside the shell body, a fixing ring is arranged at the inner bottom of the top cap, the fixing ring is arranged on the interior container in sleeved mode, and a plurality of overflow openings through which the drink can overflow freely are arranged on the outer wall above the seal ring. The interior container and the insulation board of the canteen is fixed in spin-locked mode or screw-locked mode, ove