The invention discloses a Chinese herbal preparation for treating allergic rhinitis and a preparation method and belongs to the field of traditional Chinese medicine. Effective constituents of the Chinese herbal preparation include herb of ashycoloured ironweed, wild chrysanthemum flowers, herb of Japanese phtheirospermum, radix angelicae dahuricae, ficus hispida, withered grass, stems and leaves of slender-spike gouania, herb of hispid arthraxon, puberulous glochidion herb, roots of Yunnan rosewood, radix saposhnikoviae, stems of common stelmatocrypton, muskmelon stems, flower buds of lily magnolia, fresh ginger and herbal asari. According to the Chinese herbal preparation, the selected medicinal materials are proper in compatibility and bring out the best in one another; the Chinese herbal preparation has the effects of dispelling wind and clearing heat, removing food retention and reducing phlegm, strengthening the spleen and removing dampness, promoting qi circulation and removing obstruction in collaterals and the like; after all the herbs are combined, the medicinal effect can directly reach lesions; the Chinese herbal preparation has the advantages of being rapid in effect taking, high in cure rate, free of toxic and side effects and safe and convenient to take for treating nasal obstruction, reflex headaches, nasal mucosa and turbinate atrophy, fevers, systemic allergic reaction, nasal mucosa pallescence and edema, small bronchial smooth muscle contracture, nasal mucosa dryness and itchiness and other symptoms caused by allergic rhinitis; moreover, the Chinese herbal preparation is low in price, easy to prepare and worthy of wide clinical application and popularization.