The invention relates to a soft capsule oral care agent and a preparation method thereof. The soft capsule oral care agent comprises one or several of the following natural product extracts with anti-inflammation and bactericidal activity: thymol, menthol crystal, tea polyphenol, clove oil, wintergreen oil, eucalyptus oil, blumea oil, cinnamon oil, tea tree essential oil, lavender oil, lemon oil, litsea cubeba oil, citronella oil, patchouli oil, perilla oil, zanthoxylum oil, geranium essential oil, juniper berry essential oil, evening primrose essential oil, grape seed oil, origanum oil, rose essential oil, aloe powder, rutin, hydroxyrutin, dihydroquercetin, curcumin, bisdethoxy curcumin, aloesin, barbaloin, ferulic acid, citric acid, tea purine, bitter betaine and the like, wherein the natural product extracts account for 5-75 weight percent of the soft capsule oral care agent. Moreover, the invention discloses a preparation method for the soft capsule oral care agent. The soft capsule oral care agent has the characteristics of broad antibacterial spectrum, efficient and quick effect, high safety and no toxin. The advantages of oral care products, such as chewing gum, mouth wash and the like, are integrated, and the defects of a traditional oral care agent are discarded by the soft capsule oral care agent. The soft capsule oral care agent is good in effect, convenient in carrying and simple in application.