The invention belongs to a food fresh-keeping processing method, which particularly relates to a fresh-keeping bamboo shoot processing method. The fresh-keeping bamboo shoot processing method is a fresh-keeping treatment technology characterized in that the edible position of the head of the bamboo shoot, used as the raw material, is mixed with vitamin C, bamboo vinegar (edible fermentation), tea polyphenol and CaCl2 at a certain ratio according to the working procedures of taking the raw material, pre-processing, bleaching, cooking, cooling, priming, packaging, and sterilizing, thus obtaining a finished product. According to the method disclosed by the invention, the shelf life can be prolonged for one year, and the product is guaranteed to be safe and healthful. The food fresh-keeping processing method has an important meaning on increasing the bamboo sheet selling amount, prolonging the processing period and the shelf life of the bamboo sheet, solving the long-distance transport problem that the fresh bamboo sheet needs to be refrigerated, and improving the farmer income.