The invention discloses a technological method and a device for improving the quality and storage quality of flue-cured tobacco lamina. According to the method and the device, a microwave device is arranged, the drying process of a traditional redrying machine is shortened, meanwhile, the microwave device can directly enable the moisture value of the flue-cured tobacco lamina to achieve the valueneeded by manufacturing through drying, the traditional moisture regain process is not needed, so that the production processes of the redrying link of the flue-cured tobacco lamina are reduced, thetechnological process is simplified, the microwave device also can efficiently kill mould in the flue-cured tobacco lamina, so that the traditional sterilization working procedure is saved, the production steps are simplified, the production cost is saved, the quality of the flue-cured tobacco lamina and tobacco shreds is improved, the storage quality is improved, and the economic benefit is improved.