The invention discloses a whole-course multi-section synergistic sterilization and fresh-keeping method of shredded Qiongzhuea tumidinoda Hsueh bamboo shoots, which comprises the following steps: blanching the Qiongzhuea tumidinoda Hsueh bamboo shoots with shells, removing the shells, putting the blanched Qiongzhuea tumidinoda Hsueh bamboo shoots into a blanching fixation machine, carrying out steaming fixation, carrying out color protection and brittleness protection on the whole or half cut Qiongzhuea tumidinoda Hsueh bamboo shoots, wherein the composite color protection agent is prepared bydissolving vitamin C, D-isoascorbic acid, sodium chloride and citric acid in water according to a certain proportion,the crispness-keeping agent is prepared by dissolving calcium chloride, sodium alginate and pectin in water according to a certain proportion; and then shredding, pickling to remove bitter taste, mixing, packaging in vacuum, then carrying out ultrahigh pressure treatment, precooling and liquid nitrogen quick-freezing treatment, and carrying out low-temperature freezing storage to realize long-term storage. According to the method, the storage time of the shredded Qiongzhuea tumidinoda Hsueh bamboo shoots can be prolonged to 2 years, the fresh-keeping effect is improved, original functional components of the raw materials are well preserved, the color and hardness are closeto those of fresh bamboo shoots, the taste is good, the product is safe, and no sulfur is left.