Olopatadine hydrochloride gel eye drops and preparation method thereof

The invention discloses olopatadine hydrochloride gel eye drops and a preparation method thereof. The method comprises the following steps: taking olopatadine hydrochloride as a main material, adding a gel matrix, an isotonic conditioning agent, an antiseptic and injection water as the auxiliary materials, swelling the materials, and uniformly stirring the materials, adjusting the pH value and disinfecting the materials to obtain the olopatadine hydrochloride gel eye drops with content of 0.1-0.2%. The method provides a practical, convenient and reliable preparation for treating allergic eyes, and the gel eye drops solve the problems of short detention time in eyes and poor drug absorption of the dosage-form eye drops.