The efficacy of white mustard seed is to dissolve phlegm and expel drinks, disperse knots and subdue swelling. There is no such thing as “miraculous effect” in clinical practice. White mustard is the seed of white mustard, family Cruciferae. It is pungent and warm in nature, and belongs to the lung, liver, spleen, stomach and pericardium meridians. It has the effects of resolving phlegm and removing phlegm, dispersing knots and subduing swelling. It can be used in the treatment of cough and phlegm, chest fullness (chest fullness and discomfort), coercive pain (coercive pain), numbness of the limbs, joint swelling and pain, and damp phlegm injection (multiple abscesses in the deep muscle). It should be noted that the drug is contraindicated for people with lung deficiency and cough, yin deficiency and fire exuberance (deficiency of yin and essence in the body, with the appearance of hyperactive deficiency and fire). Before using White mustard seed, it is recommended to visit a regular hospital and use it under the guidance of a professional physician.