Polarizing plate and image display device having same

The present invention relates to a polarizing plate and an image display device having the polarizing plate, and the polarizing plate comprises a polarizer satisfying a specific mathematical formula, a protective film adhered on at least one surface of the polarizer by using an adhesive composition including polyallylamine-based resin and a cross-linking agent, thereby maintaining a high degree of cross-linking, inhibiting problems such as cracks or fractures, and providing excellent durability and dimensional stability in high temperatures.