A navigation apparatus for dynamically displaying multiple frames of house number and its method. The navigation apparatus comprises a road information temporary storage module, a frame information temporary storage module, a processing module and a display unit. The real-time road information is temporarily stored at the road information temporary storage module; a house number information, a point of interesting or user customized information is temporarily stored at the frame information temporary storage module. Furthermore, the processing module updates the real-time road information and the house number information, the point of interesting or the user customized information corresponding to real-time road information according to a global positioning system signal. The display unit displays real-time road information and plays house number information, the point of interesting or user customized information by turns.