The invention provides a storage and refreshing method of fresh-cut potato. The storage and refreshing method comprises the following steps of: (1) peeling potatoes; (2) slicing the peeled potatoes; (3) putting the potatoes sliced in the step (2) into clean water, washing off mud, impurities and residual starch; (4) putting the washed potatoes into sodium hydrogen sulfate solution for soaking; (5) carrying out UV-C treatment on the soaked potatoes; (6) packaging; and (7) immediately putting the packaged potatoes into a cold storage room for storage. By virtue of the storage and refreshing method provided by the invention, the washed potatoes are put into the sodium hydrogen sulfate solution for soaking and UV-C treatment is carried out; after treatment, the potatoes have the following beneficial effects that the potatoes are good in color and low in browning degree; the hardness of the potatoes is high, the minimum hardness is 589.74N, the maximum hardness reaches 740.45N and the average hardness reaches 653.80N; the detection quantity of microorganisms on the potatoes is low.