The invention belongs to the technical field of traditional Chinese patent medicaments, and in particular relates to a medicament for treating cervical spondylosis and a preparation method thereof. The medicament is mainly used for solving problems of the existing medicaments for treating cervical spondylosis such as single effect, strong side effects, high possibility of complications and the like. The medicament is prepared from astragalus root, red sage root, gastrodia tuber, white peony root, uncaria rhynchophylla, kudzuvine root, szechuan lovage rhizome and lamiophlomis rotata. The preparation method comprises the following steps: taking the red sage root and the uncaria rhynchophylla, carrying out reflux extraction with ethanol for 2-4 times, and concentrating the extracting solution to obtain clear paste I; taking dregs of the extracted red sage root and uncaria rhynchophylla, distilling to remove the ethanol, mixing the dregs with the astragalus root, the gastrodia tuber, the white peony root, the kudzuvine root, the szechuan lovage rhizome and the lamiophlomis rotata, decocting the mixed materials with water for 2-4 times, merging decoction, filtering, and concentrating the obtained filtered liquor to obtain clear paste II; and mixing the clear paste I and the clear paste II, crushing the mixed clear paste to obtain extract powder, adding lactose and aspartame to the extract powder, evenly mixing to form particles, sterilizing and packaging to obtain the medicament. The medicament for treating cervical spondylosis has the advantages of definite curative effect, comprehensive regulation function, low cost, no toxic side effects and the like.