A mobile display system includes a first mobile display device and a second mobile display device. The first mobile display device includes a first power storage module, a first screen, and a wireless power transmitter. The first screen is configured to display a first image by using the power stored in the first power storage module. The second mobile display device includes a second power storage module, a second screen, and a wireless power receiver. The second screen is configured to display a second image by using the power stored in the second power storage module. During a period when the first power storage module is charged, the wireless power transmitter provides a first wireless power signal to the wireless power receiver, so as to charge the second power storage module by the first wireless power signal.