Abstract: Disclosed are an orally disintegrating porous film and a method of preparing the same, wherein the orally disintegrating porous film includes a foaming agent, a foam stabilizer, a plasticizer, and a pharmacologically active ingredient. This orally disintegrating porous film possesses properties suitable for a film and also has micropores therein, thus significantly improving the drug dissolution rate, and can be easily prepared at low cost through a simple preparation process, thereby exhibiting superior processability.