The invention discloses a fresh-keeping agent. The fresh-keeping agent is prepared from the following components: 5-15 parts of a honeysuckle flower extract, 5-10 parts of sucrose ester, 3-8 parts ofcitric acid, 3-9 parts of tea polyphenol, 2-6 parts of honey, 3-7 parts of Chinese wolfberry juice and 10-30 parts of water. Compared with the prior art, the fresh-keeping agent has the beneficial effects that green raw materials are adopted, the cost is low, and the effect is excellent.