The utility model provides a kettle -type reboiler, includes casing, apron, heat exchanger tube bundles and heat transfer core, the casing is the horizontal -type cylinder body structure, is equipped with open end, shell side gas outlet on the casing, the inside weir plate that is equipped with of casing, the weir plate is along vertically setting up inside the casing, with inside heat transfer district and the overflow district that divide into the upper portion intercommunication of casing, still be equipped with the shell side liquid inlet who is located heat transfer district lower part on the casing and be located the shell side liquid outlet that the lower part was distinguished in the overflow, the apron is used for closed shell's open end, heat exchanger tube bundles and heat transfer core set up the heat transfer district at the casing, be equipped with respectively the tube side liquid inlet and the tube side liquid outlet that advance, export the intercommunication with heat exchanger tube bundles's fluid on the apron to and board journey liquid inlet and the board journey liquid outlet that communicates is advanced, export with the fluid of heat transfer core respectively. The utility model discloses a kettle -type reboiler will be used for the heat exchanger tube bundles of heat transfer and heat transfer core to combine together, can high -efficient heat transfer, slow down " steam cover " phenomenon, and can also reduce the influence of scale deposit to heat transfer performance simultaneously.