The invention provides a canned kudzu root and Chinese yam body-building cake. The cake is characterized in that 50-800g of canned kudzu root and Chinese yam body-building cake is prepared by adding water to 9-15g of kudzu root powder and 15-30g of Chinese yam powder and heating the mixture; and when the kudzu root powder and the Chinese yam powder are added, 0-100g of starch, 0-100ml of milk, 0-100g of sugar and 0-15g of respective foxnut, coix seeds or foreign coix seeds, tremella, gingkoes, longan pulp, coconuts, lotus seeds, Chinese chestnuts, mung beans, red beans, peanuts, corn, wheat and red dates, which are peeled, hulled or denucleated and purified or are cooked in sugar after being peeled, hulled or denucleated and purified, can be added. The canned kudzu root and Chinese yam body-building cake has fresh and sweet taste, is slippery and tasty, can appease hunger, has the functions of expelling pathogenic factors from muscles for clearing heat, engendering liquid and allaying thirst, promoting eruption, invigorating yang and relieving diarrhea, clearing and activating the channels and collaterals, alleviating hangover, tonifying spleen and nourishing stomach, engendering liquid and benefiting lung, tonifying kidney and arresting seminal emission, and is convenient to carry and long in preservation time. The plastic canned kudzu root and Chinese yam body-building cake can be preserved for one year and the metal canned kudzu root and Chinese yam body-building cake can be preserved for two years, without getting mildewed and deteriorated.