The invention discloses a Chinese medicinal herb insect preventing and disinfesting skirting line. The skirting line is a skirting line on which a Chinese medicinal herb decoction is sprayed. The Chinese medicinal herb decoction is prepared from the following raw materials in parts by weight: 8 parts of azadirachta indica, 6 parts of chrysanthemum cinerarisefolium, 2 parts of pinellia tuberifera,3 parts of calystegia hederacea, 3 parts of radix stemonae, 4 parts of plantain herb, 2 parts of fructus xanthil, 1 part of herba lobeliae chinensis, 5 parts of onion, 7 parts of wrinkled gianthyssop, 3 parts of peppermint, 3 parts of grass-leaved sweetflag, 2 parts of lemongrass, 3 parts of Chinese anise, 3 parts of pericarpium citri reticulatae, 3 parts of orange peel and 3 parts of cinnamon. In the invention, a pure plant preparation is taken as a raw material decoction for spraying onto the skirting line, so that environmental friendliness is achieved, and harmfulness to a human body is fundamentally avoided; after the raw material decoction is sprayed onto the skirting line, the skirting line can be used for effectively killing eggs in the skirting line and preventing damage by worms; and moreover, the skirting line can be used for killing cockroaches around the skirting line and plays a certain role in killing reptiles and ants around the skirting line.