The invention discloses a snack food capable of replenishing blood and tonifying the kidney. The snack food is characterized by being prepared through the following steps of thoroughly cleaning black beans, black rice and black sesame seeds serving as raw materials, then steaming the cleaned materials at constant pressure with a steamer, when the steamed materials are completely cooked, taking out the completely cooked materials, putting the cooked materials in a drying room for drying until the water content is smaller than 8%, and performing superfine comminution so as to obtain 150 or more mesh mixed powder; and then adding a traditional Chinese medicine extract of barbary wolfberry fruits, mulberry fruits and haws, uniformly mixing the traditional Chinese medicine extract with the mixed powder so as to obtain a mixture, performing compression moulding on the mixture by using tabletting equipment so as to obtain snack food blanks, roasting the snack food blanks in a furnace, cooling the roasted snack food blanks, and performing packaging with nitrogen. The snack food is prepared from the following components in percentage by weight: 50-70% of the mixed powder and 30-50% of the traditional Chinese medicine extract. The solution adopted by the invention lies in that the black beans, the black rice, the black sesame seeds, the barbary wolfberry fruits, the mulberry fruits and the haws are used as the raw materials, and according to a traditional Chinese medicine theory and scientific extraction and concerted application, a purely natural crisp chip food which is natural, nutrient, convenient and good in mouth feel is made; the snack food can nourish yin, replenish blood, promote salivation and moisten dryness and has the efficacies of replenishing blood and tonifying the kidney, and if people often eat the snack food, the purposes of replenishing blood and tonifying the kidney can be achieved.