The invention relates to a method of manufacturing dietary fiber powder and jam mainly through a process of cleaning, crushing, drying for the first time, soaking, filtering, distillation, drying for the second time, grinding and packaging into the dietary fiber powder whereas a process of cleaning, crushing, soaking, filtering, distillation, adding real fruits for the flavor, heating to concentrate, adding, sugar, and packaging into the dietary fiber jam. The invention describes a method of manufacturing dietary fiber powder and jam, which mainly collects and uses the disposed fruit peels, removes the essential oils and substances with bitter taste, and produces the fine raw materials of the dietary fiber powder and jam, in order achieve the benefit of recycling and environmental protection.