Oral composition having a good antibacterial effect

An oral composition having good antibacterial effects is provided to enhance antibacterial activity, prevent lowering of antibacterial activity, and bring up the antibacterial effects after its employment due to teethridge contraction and elasticity feeling. The oral composition having good antibacterial effects comprises 0.01-5 wt.% of cationic sterilizing agent, 4-10 wt.% of nonionic surfactant, and 0.01-2 wt.% of astringent, wherein the cationic sterilizing agent is cetyl pyridinium chloride; the nonionic surfactant is lauryl glucoside, cocamide DEA or polysorbate 20; and the astringent is a zinc compound such as zinc chloride, zinc oxide, zinc sulfate and zinc gluconate or a natural additive such as tannin.