The invention discloses an intelligent television window switching method, a system and an intelligent television. The method comprises that: an animation layer for displaying a switching frame is set in advance, and the animation layer is set to be in the transparent state: when the intelligent television receives a trigger order and switches between a television frame and an application interface with a picture-in-picture window, the animation layer is set to be in the non-transparent state; and an television frame image is intercepted in real time, and the television frame image is manufactured in a way that a switching animation is displayed in the animation layer. Switching between the television frame and the application interface with the picture-in-picture window is smoother so that pause of the television frame image is avoided and watching experience is enhanced.