The invention relates to a method for preparing pickled vegetable by a silage fresh fruit sugar biology fermentation preparation as well as a technology thereof, the pickled vegetable is composed of vegetable, the fresh fruit sugar biology fermentation preparation, lactic acid, sodium lactate, citric acid, chitosan, salt and streptomycin, the pickled vegetable which is pickled by the fresh fruit sugar biology fermentation preparation, the solution of the pickled vegetable has the advantages of transparency, stabilization and good mouthfeel, according to the fermentation technology, salt can be greatly reduced, fermentation time is shortened, resource is saved, and the pickled vegetable has the advantages of good quality, salubrity and safe usage. The fermented preparation is repeatedly usable after being processed, and has the advantages of saved cost, time-saving and labor-saving, environmental protection, no pollution and zero discharge, and can realize large scale industrial production.