The invention discloses lomefloxacin hydrochloride eye drops and a preparation method and application thereof. The lomefloxacin accounts for 0.3% of the active components. The preparation also comprises a tackifier, a buffer salt system, a wetting agent, an isoosmotic adjusting agent, a pH adjusting agent and a bacteriostatic agent, and is suitable for treating the external eye infections such asacute and chronic bacterial conjunctivitis, blepharitis, hordeolum, meibomiantis, dacryocystitis, keratitis, keratohelcosis and the like caused by sensitive pathogenic bacteria. The product is characterized in that: by adding the sodium hyaluronate with a tackifying effect and a moisturizing effect, the viscosity of the lomefloxacin hydrochloride eye drops is improved, the fluidics property thereof is changed, the residence time of the eye drops in the eyes is prolonged, the sufficient absorption of the medicine is ensured, the bioavailability is increased, the administration times are reduced, the compliance of a patient is improved, and an effective treatment effect is realized.