Cold-induced vomiting is generally due to external wind-cold invasion combined with internal damp stagnation. The main clinical symptoms include chills and fever, headache, chest and diaphragmatic oppression, nausea, and vomiting. Clinically, Huoxiang Zhengqi Powder with modifications is commonly used, a formula originating from the Song Dynasty’s "Taiping Huimin Heji Ju Fang." Its main effects are to release the exterior, transform dampness, regulate qi, and harmonize the stomach. The formula primarily contains Chinese medicinal ingredients such as patchouli, costus root, perilla leaf, angelica dahurica, poria, pinellia ternata prepared with ginger, atractylodes, tangerine peel, magnolia bark, and licorice. Patchouli can expel external wind-cold and transform internal damp turbidity; Pinellia prepared with ginger and tangerine peel can regulate qi, dry dampness, harmonize the stomach, and reduce reverse flow. Atractylodes and poria can strengthen the spleen and transform dampness; Costus root and magnolia bark can move qi and transform dampness. Perilla leaf resolves external wind-heat and moves qi to stop vomiting; Angelica dahurica also has the function of drying dampness. (Medicines should be taken under the guidance of a physician according to the actual situation.)