The invention discloses a preparation technology of a green tea. The preparation technology comprises the following steps: picking fresh leaves; withering the picked fresh leaves; performing fixation; spreading the fresh leaves after fixation so that the fresh leaves after the fixation are cooled, and performing resurgence on the cooled fresh leaves; rolling the fresh leaves after resurgence; primarily baking the rolled fresh leaves, spreading the baked fresh leaves so that the baked fresh leaves are cooled, and baking the cooled fresh leaves once more; enhancing fragrance, and stoving the fresh leaves after fragrance enhancement; and testing quality, weighing the weight of each pack of the green tea, and packaging the green tea. According to the preparation technology disclosed by the invention, Huoshan Huangya is used as raw materials, so that the green tea prepared by using a unique technology has the characteristics of being rich, strong, fresh and refreshing in taste; besides, Huoshan local Chinese herbal medicines of Huoshan dendrobium, Huoshan glossy ganoderma, Anhui fritillaria thunbergii, Longhan pinellia tubers, wolfiporia extensa, eucommia ulmoides, platycodon roots and clinopodium herb are added, so that the green tea has the efficacies of removing dampness, removing toxin, moistening lung for arresting cough, clearing heat, soothing the nerves, resolving dampness, promoting diuresis, benefitting spleens, regulating the function of the stomach, quieting the heart and soothing the nerves, and has auxiliary curative effects on diseases of cough, hemoptysis, chronic bronchitis, weariness, spiritlessness, neurataxia, restless sleep and the like. Besides, the green tea has the effect of regulating an immune system, an endocrine system, a central nervous system, a circulatory system and a urinary system in different degrees, so that the green tea prepared by using the preparation technology disclosed by the invention has better health care efficacies than other green teas.