The invention discloses a child-mother plaster for treating headache, arthralgia, rhinitis and trachitis by using foamed traditional Chinese medicines. The child-mother plaster consists of two medicine groups A and B, wherein the medicine group A is the mother plaster group which comprises the following raw materials: raw radix aconite, raw radix aconiti kusenzoffii, raw arisaema, raw pinellia, rhizoma typhonii, white pepper, radix angelicae, garden balsam stem, radix clematidis, raw ephedra, flos daturae, Tinglizi, magnolia flower, ligusticum wallichii, ground beeltle, sappanwood, radix curcumae longae, boswellia carterii, myrrh, borneol and camphor; and the medicine group B is the child plaster group which comprises the following raw materials: Euphorbia kansui, semen brassicae, rhizoma corydalis, as arum, cuckoo-bud, bean cantharides, lytta caraganae, anhydrous sodium sulphate, sangusis draconis, borneol and camphor. The two medicine groups are powder and made into rosin plasters, the plaster A is made into a 2cm circle, the plaster B is made into a particle like a soybean and arranged at the center of the plaster A, and a self-adhesive dressing is used as a carrier to prepare the plasters into a 6m external plaster. The plaster is convenient and safe to use, wide in disease application, firm to paste and remarkable in curative effect and does not pollute the clothes.