Red-color dragon fruit vinegar processing process

The invention relates to a red-color dragon fruit vinegar processing process which comprises the following five steps: treating raw materials, performing low-temperature alcohol fermentation, performing low-temperature acetic acid fermentation, performing low-temperature ageing and performing low-temperature sterilization and filling. In the processing process, containers, pipelines, valves and tools for the raw materials, half-finished products and finished products are all made of food-grade stainless steel, ceramic or high polymer materials and are prevented from contacting iron, aluminum or copper, optimally low-temperature bacteria are used, and a stabilizing agent is added in the fermentation and ageing process, so that the problems that pigment of the dragon fruit is damaged because of metal ion contact or high temperature and the quality is not easy to ensure are effectively solved, and the processed dragon fruit vinegar has the advantages of unique and fresh flavor, attractive color and the like.