The present invention relates to an herbal tea without excipient used as milk supplement. The herbal tea comprises the following medicinal materials: Raw Semen Coicis, Herba Lophatheri, Setaria Italica, Prepared Semen Coicis, Fructus Hordei Germinatus, Fructus Setariae Germinatus, Medulla Junci and Triticum Aestivum, wherein the Triticum Aestivum is used as a forming agent in the herbal tea. The method of preparing the herbal tea comprises the following steps: (a) weighing the medicinal materials according to the formula of herbal tea; (b) mixing the medicinal materials except for Triticum Aestivum together, decocting the resulting mixture with water 1-3 time(s), each time lasting for 0.5-2 hours, then combining the decoctions obtained from each time, filtering, and concentrating the resulting filtrate into a concentrated solution with relative density of 1.0-1.3 g/cm3; (c) pulverizing the weighed Triticum Aestivum into particles of 15-40 mesh size, then dispersing the concentrated solution obtained from the step (b) to the pulverized particles of Triticum Aestivum; (d) fully drying the pulverized particles of Triticum Aestivum loaded with the concentrated solution obtained from the step (c), then packing the particles in a desired product form. The herbal tea of the present invention is specially suitable for babies who have trouble with intestine heat and stomach heat resulted from their long-term intake of milk product, since long-term intake of undesired components such as sucrose or other excipients which are not beneficial for their health is avoided.