A display system is disclosed. The display system includes several electrical apparatuses and a display control unit. The display control unit builds connections with the electrical apparatuses. The display control unit includes an information generating module and a display driving module. When the display system is in a combination display mode, the information generating module detects and generates combination information about combination relations among the display units of the electrical apparatuses. The display driving module drives each of the display units to display a corresponding image block according to the combination information. Hence, the displayed corresponding image blocks can be combined to form an entire image. A display method is also disclosed.