Preparation method of circular heat insulation fireproof hose for ship ventilation tail end

The invention discloses a preparation method of a circular heat insulation fireproof hose for a ship ventilation tail end. The preparation method comprises the following steps that under the action ofexternal force, an annular spiral metal framework is enabled to be in a stretching state, an adhesive layer of an aluminum foil adhesive tape is adhered to the inner side of the annular spiral metalframework to form a first aluminum foil layer, the adhesive layer of the aluminum foil adhesive tape is adhered to the outer side of the annular spiral metal framework to form a second aluminum foil layer, a rock wool board is wound outside the second aluminum foil layer to form a heat insulation material layer, the adhesive layer of the aluminum foil tape is adhered to the outside of the heat insulation material layer, an outer aluminum foil layer is formed, the external force is released, the annular spiral metal framework is restored to a natural state, so that the heat insulation fireproofhose is obtained. Accordin