The invention discloses red date and ginger tea and a preparation method thereof. The red date and ginger tea comprises the following raw materials in parts by weight: 10-12 parts of ginger, 4-6 parts or red dates and 2-4 parts of brown powdered sugar. The preparation method comprises the following steps of: adding water into red dates and ginger, soaking and then decocting for 2h; separating to obtain a decoction liquid a and an insoluble substance a, adding water into the insoluble substance a, decocting for 1h, and separating to obtain a decoction liquid b and an insoluble substance b; merging the decoction liquid a and the decoction liquid b, filtering, and concentrating the filter liquid to obtain an extract; and crushing brown sugar into 100-mesh powder, mixing the crushed brown sugar with the eaxtract, uniformly stirring, granulating into 14-16-mesh powder, and drying to obtain a finished product. The red date and ginger tea has the functions of invigorating blood circulation, dispelling cold, removing moisture, inducing perspiration, disintoxicating, promoting digestion, arresting vomiting, avoiding fish smell, eliminating edema, relaxing the bowels, caring the skin and beautifying the face. The red date and ginger tea can be drunk by adding water and is convenient to carry, and the effective ingredients can be rapidly, effectively and thoroughly extracted.