The invention relates to a technique for preparing canned medlar fresh fruit, comprising the steps: medlar fresh fruit is chosen, cleaned, pre-sterilized, sprayed by sterile water, removed stem manually, canned, processed by color protection, exhausted, sealed, sterilized and cooled; wherein, the step of pre-sterilization comprises: the medlar fresh fruit is put into 0.01-0.05% chlorine dioxide solution or 0.01-0.05% peroxyacetic acid solution to be soaked for 5-20min, and the concentration is weight concentration;

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