White mustard can be applied externally to treat asthma, swollen and painful feet, acne rash, swelling and poisoning, pediatric lactation and other efficacy effects. White mustard has the ability to warm the lungs, exclude phlegm and expel qi, and disperse knots and collaterals to relieve pain. It is used orally for coughing with cold phlegm, distension and pain in the chest and ribs, phlegm stagnation in the meridians, numbness and pain in the joints, phlegm-dampness flow, gangrene, swelling and poison. External application can also be used to treat asthma, allergic rhinitis and other diseases. It can be used externally by mixing it into a paste and applying it externally on lung acupoints, kidney acupoints, heart acupoints, wind gate acupoints and other acupoints. Applied externally to the feet, it can treat foot pain; applied externally to the heart of the foot, it can treat acne rashes; at the early stage of swelling and poisoning, white mustard seeds can be minced and applied with vinegar. Note: Avoid external use if the skin is allergic or ulcerated. The use of drugs need to follow the doctor’s advice, do not self-medication.