Inclusion Criteria:

1. Out patient;
2. Ocular discomfort severity is moderate to severe;
3. Corneal-conjunctival damage is moderate to severe;
4. Unanesthetized Schirmer's test score of 5mm/5minutes or less,or tear breakup time is 5 seconds or less;
5. Best corrected visual acuity of 0.2 or better in both eyes.

Exclusion Criteria:

1. Presence of anterior segment disease or disorder other than that associated with keratoconjunctivitis scicca;
2. Ocular hypertention patient or glaucoma patient with ophthalmic solution;
3. Anticipated use of any topically-instilled ocular medications or patients who cannot discontinue the use during the study;
4. Anticipated use of contact lens during the study;
5. Patient with punctal plug;
6. Any history of ocular surgery within 12 months;
7. Female patients who are pregnant, possibly pregnant or breast feeding;
8. Known hypersensitivity to any component of the study drug or procedual medications;
9. Receipt of any investigational product within 4 months.