Natural fragrance fresh-keeping agent used for litchi

The invention relates to a natural fragrance fresh-keeping agent used in fruit fresh keeping after litchi picking. The fresh-keeping agent comprises tea tree oil, eugenol, and citral. The fresh-keeping agent has a good volatilization nature, and can form a fragrance with antimicrobial and preservative functions around litchi fruits. Therefore, litchi fruit rotten rate after picking is effectively reduced, and litchi fresh period is prolonged. The components of the fresh-keeping agent provided by the invention are natural edible fragrances with no toxicity or harm. Preservation and fresh-keeping are carried out with volatile fragrance, such that the fresh-keeping agent is safe, and causes no residue.