A method for displaying an incoming call alert of a mobile phone is disclosed. The method includes the steps of: obtaining an image from a storage of the mobile phone; converting the image to a vector graph according to an algorithm for generating a vector graph, the vector graph being a cartoon image; obtaining a music file from the storage of the mobile phone; merging the vector graph and the music file thereby generating an animation file, setting a caller corresponding to the animation file, and storing the animation file and the caller information in the storage; invoking an animation file corresponding to a caller when an incoming call by the caller is received, and playing the animation file. A related mobile phone is also disclosed.