The invention provides a Chinese herbal tea for preventing and treating flu and for preventing and treating cold and upper respiratory infection. The Chinese herbal tea is prepared by processing 13 herbal medicines including honeysuckle, fructus forsythia, chrysanthemum, folium mori, scutellaria baicalensis, folium isatidis, dandelion, houttuynia cordata, isatis root, cyrtomium fortune, astragalus mongholicus, poria cocos and liquorice. The formula of the Chinese herbal tea for preventing and treating the flu is formulated on the basis of traditional Chinese medicine, traditional Chinese internal medicine, traditional Chinese medicine and pharmacology, traditional tea art and clinical experience of traditional Chinese folk medicine recipes for clearing summer heat, relieving exterior syndrome and resolving dampness, treating fever and aversion to cold, headache and body fatigue, bad appetite, choking sensation in chest and sicchasia, dispelling the wind and relieving pain, dispelling mild wind and opening the inhibited lung-energy. The Chinese herbal tea has the functions of enhancing immunity, resisting microbes and bacteria and preventing flu, can be used for effectively preventing and treating rhinitis, sphagitis, pneumonia and other diseases caused by cold and upper respiratory infection. The Chinese herbal tea is convenient to take and good in prevention and treatment effect.