The invention discloses a fire door which is easy to disassemble, comprising a fire door body, a connecting plate is arranged on the right side of the fire door body, a sleeve is arranged on the right side of the connecting plate, and the inner wall of the sleeve is movably connected There is a cylinder, the bottom of the cylinder is sleeved with a rotating shaft, the bottom of the rotating shaft is fixedly connected with a support plate, the surface of the cylinder is sleeved with a baffle, and the right side of the cylinder is provided with a first slot. The invention provides connecting plate, sleeve, support plate, rotating shaft, cylinder, baffle plate, first card slot, support rod, handle, first card bar, limit plate, first spring, second card slot, third card slot The mutual cooperation of the groove, the connecting block, the handle, the second clamping rod and the second spring solves the problem that the existing fire doors are not easy to disassemble, thereby saving a lot of time and saving the disassembler when the disassembler disassembles. A lot of physical strength improves the practicality of fire doors.