The invention discloses a non-welding double-seal rapid disassembling and assembling type steam heat changer comprising an upper closed cover, heat exchanger main body sets and a lower closed cover. The upper closed cover and the lower closed cover are arranged at the upper ends and the lower ends of the heat exchanger main body sets correspondingly, and circular sealing strips are arranged between the heat exchanger main body sets and the upper closed cover as well as between the heat exchanger main body sets and the lower closed cover. The non-welding double-seal rapid disassembling-assembling type steam heat changer has the following advantages that the steam heat exchanger adopts the non-welding double-seal rapid disassembling and assembling type and is prevented from rusting, the heatexchange effect is fully improved, and the steam leakage phenomenon is avoided; the cost is reduced, and the maintenance time is saved; and scrapping of the steam heat changer is avoided, and socialresources are saved.