The invention aims to provide a traditional Chinese medicine for improving postoperative anxiety state in patients with thyroid cancer. The traditional Chinese medicine is prepared from radix bupleuri, radix scutellariae, pericarpium citri reticulatae, pinellia ternata, bamboo shavings, fructus aurantii immaturus, radix gentianae, fructus gardeniae, cassia seed, chrysanthemum, white paeony root, radix rehmanniae, tuber fleeceflower stem, magnet, mother of pearl, rhizoma nelumbinis, leech, centipede, spina gleditsiae, Chinese prickly ash, liquorice, spica prunellae, seaweed, poria cocos and white atractylodes rhizome. The traditional Chinese medicine is prepared by the steps: mixing the traditional Chinese medicines together, adding water, soaking for half an hour, boiling with high heat, then changing to gentle heat, decocting for 30 min, and filtering to obtain a first filtrate; adding water to the filter residue, boiling with high heat, then changing to gentle heat, decocting for 30min, and filtering to obtain a second filtrate; and mixing the two filtrates evenly, concentrating to 200-300 mL, and thus obtaining the product. The traditional Chinese medicine is prepared by the pure traditional Chinese medicines, has the efficacies of clearing liver and purging fire, activating blood circulation and removing blood stasis, preventing and delaying the recurrence and metastasis of thyroid cancer, is an innovation in medicines of postoperative rehabilitation treatment for thyroid cancer, and has remarkable economic and social benefits.