TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Component: The percutaneous paste further comprises 1-10 wt.% each of inert filling agent, adhesion agent and antioxidant. The azasetron is azasetron or its salt or hydrate. The percutaneous absorption enhancer is alcohol, sulfoxide, soft enhancer of percutaneous absorption (SEPA), fatty acid, surfactant, terpene, amine, amide, amino acid or its ester or phospholipid. The alcohol is ethanol, propylene glycol, isopropyl alcohol, isobutyl alcohol, dodecanol, or n-caprylic alcohol. The sulfoxide is dimethyl sulfoxide and/or decyl methyl sulfoxide. The fatty acid is oleic acid, isopropyl palmitate, propylene glycol dipelargonate, diethyl sebacate, dibutyl sebacate, dibutyl phthalate, glycerol monooleate, methyl laurate, ethyl laurate, glycerol monolaurate, polyethylene glycol monolaurate, polypropylene glycol monolaurate, sorbitan monooleate, olein, or dibutyl phthalate. The surfactant is poloxamer, Transcutol P (RTM: highly purified diethylene glycol monoethyl ether), Tween 20 (RTM: polyoxyethylene (20) sorbitan monolaurate), Tween 40 (RTM: polyoxyethylene (20) sorbitan monopalmitate), Tween 60 (RTM: polyoxyethylene (20) sorbitan monostearate), Tween 80 (RTM: polyoxyethylene (20) sorbitan monooleate), Span 20 (RTM: sorbitan monolaurate), Span 40 (RTM: sorbitan monopalmitate), Span 60 (RTM: sorbitan monostearate), or Span 80 (RTM: sorbitan monooleate). The terpene is menthol or its organic acid ester, cineole, a -pinene, D-limonene, 3-alkene, a -terpineol, pine oil-4-alcohol, carveol, a -bisabolol, carvol, pulegol, piperitone, menthone, fenchone, cyclohexene oxide, limonene oxide, cyclopentene oxide, piperazine, 7-oxabicyclo(2,2,1)heptane, safrole, nerolidol, geraniol, eucalyptol, mustard oil, Cananga oil, camphor, or borneol. The amine is urea or dodecyl-N,N-dimethylamino ethyl ester. The amide is dimethylformamide or dimethylacetamide. The phospholipid is lecithin, soybean phospholipid, phosphatidylglycerol, phosphatidylethanolamine, phosphatidylcholine, phosphatidylinositol, phosphatidylserine, or sphingomyelin.The organic acid in the organic acid ester is acetic acid, propionic acid, butyric acid, valeric acid, caproic acid, heptylic acid, caprylic acid, n-nonanoic acid, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, lactic acid, salicylic acid or cinnamic acid.    TECHNOLOGY FOCUS - POLYMERS - Preferred Component: The pressure-sensitive adhesive is silicone, isobutene polymer, acrylate polymer, or cellulose or their derivatives. The back lining layer is aluminum-containing polyethylene film or elastic nonwoven fabrics. The anti-adhesive layer is fluorine-containing polyester film or paper with surface treated with silicone oil.