Power sharing system and method of LED spliced large screen and storage medium

The invention relates to a power source sharing system and method of an LED spliced large screen and a storage medium. The power source sharing system comprises a first LED screen, a second LED screen, a first power source switch, a first power source and a second power source. The first LED screen and the second LED screen are connected in parallel; the first power supply is connected in series with the first LED screen; the second power supply is connected in series with the second LED screen; the first power supply, the second power supply and the first power switch are connected in series. When the first power supply/the second power supply cannot supply power to the first LED screen/the second LED screen, the first power supply switch is closed, so that the second power supply/the first power supply can supply power to the first LED screen/the second LED screen; the problem that the sub-LED screen cannot be lightened due to the fact that the main power supply of the sub-LED screen breaks down can be solv