The invention provides a fresh keeping method for fresh-cut vegetables, and application of the fresh keeping method to storey onion fresh-cut products, and belongs to the technical field of fruit andvegetable fresh keeping. According to the fresh keeping method, an electrostatic field technology and a low-temperature fresh keeping technology are coupled, an electrostatic field can be applied to the tubular leaf vegetable products such as storey onions to prolong the fresh keeping cycle of the fresh-cut products, and then the market supply time of the fresh-cut commercial onions is prolonged.The method comprises the steps: S1, the fresh-cut vegetables are placed in an isolation bag which is made of PE; and S2, the fresh-cut vegetables are placed into an environment with the temperature being minus 1.5 DEG C-minus 2.0 DEG C, the relative humidity being 85% and the electrostatic field intensity being 50 mV-200 mV to be subjected to fresh-keeping storage. The fresh keeping method can beused for fresh-keeping storage of the storey onion fresh-cut products.