The invention discloses an externally applied antibacterial and antiphlogistic medicament and a preparation method thereof, and relates to an antiphlogistic medicament and the preparation method thereof. The antiphlogistic medicament is processed and prepared by the following raw materials: peppermint, fineleaf schizonepeta herb, divaricate saposhnikovia root, rhubarb, amur corktree bark, common andrographis herb, fructus forsythiae, baical skullcap root, Philippine violet herb, radix salviae miltiorrhizae, lightyellow sophora root, dahurian angelica root, tree peony bark, aloe, membranous milkvetch root, indigowoad leaf, sweet wormwood herb, Chinese gentian, sinkiang arnebia root, liquoric root, Chinese gall, golden thread, cassia seed, indigowoad root, honeysuckle flower, chrysanthemum, hawthorn fruit, sessile stemona root, argy wormwood leaf, common cnidium fruit, borneol powder, borax powder, honey, propanetriol, propanediol, Tween-60, OP10, castor oil and turpentine oil. The product has good antibacterial and antiphlogistic effects, bacteria can not generate an antibody and can not generate the resistance to the medicament, the bacteria can be prevented from being mutated to superbacteria, and the antiphlogistic medicament has no toxicity or side effects and is safe to use.