The invention relates to a preparation method of honeysuckle flower tea. Honeysuckle flower of traditional Chinese medicinal materials is used as a raw material to be prepared into tea, and the method comprises the following steps: harvesting fresh flowers, carrying out fixation instantaneously, drying at low temperature, airing, regaining moisture, and bagging products. In a picking process of a honeysuckle product raw material, the picking time, the shape and the picking standard of the honeysuckle are controlled strictly, the consistence of the raw material is ensured, and the effective constituents and the mineral elements of the honeysuckle product are stabilized; and besides, the picking method and the drying method are simple and are not limited by time and region, the method is suitable for large-scale production of the honeysuckle product; and the method is beneficial to improving the additional value of the honeysuckle and the economic benefit can be improved.