The invention relates to a reusable supercharging superheat steam drying method and a device which consists of a multi-stage drying system. The first stage drying is supercharging superheat steam drying, gas circulated in the system is superheat steam, wet materials are discharged out of the drying system after being heated and dehydrated by the superheat steam, the steam generated by moisture in the system is circulated in the system and provides heat to dry the wet materials after being heated by a heat exchanger. The superheat steam beyond the need of system circulation is discharged from the first stage drying to the next stage drying and is used as the heat source of the next stage drying. The second stage drying and each subsequent stage drying (except the last stage drying) are carried out by a supercharging indirect superheat steam drier with an internal heating device, which utilizes the superheat steam from the previous stage drying to dry the wet materials indirectly. The wet materials are discharged out of the drying system after being heated and dehydrated by the superheat steam, and the superheat steam from the previous stage drying is condensed into condensate water and then is discharged out of the drying system.