The invention relates to a medicament for treating chilblains and a preparation method thereof. The medicament is prepared through the steps of (1) respectively juicing 4000 parts by weight of ginger and 4000 parts by weight of white radishes so as to obtain ginger juice and white radish juice, and mixing the ginger juice with the white radish juice so as to obtain mixed juice; (2) respectively crushing 3-5 parts by weight of borneol and 8-12 parts by weight of camphor so as to obtain borneol powder and camphor powder; (3) adding the prepared borneol powder, the prepared camphor powder and 100 parts by weight of liquor into the mixed juice prepared in the step (1), and uniformly mixing the obtained mixture. When in use, the prepared medicament for treating chilblains is smeared on a part with chilblains, 1-3 times a day, generally the medicament becomes effective on the same day, and swelling and pain are improved and can be cured in one week. After a part with chilblains is soaked 20 minutes by using warm water, the application effect of the medicament is better. Therefore, in case of treating chilblains by using the medicament for treating chilblains, provided by the invention, the effect is remarkable; moreover, the preparation method of the medicament is simple.