An LED lamp includes a heat dissipation lamp holder provided with a mounting groove on a front side thereof; an LED lamp panel mounted in the mounting groove; a driving power supply electrically connected to the LED lamp panel and configured to power the LED lamp panel; a switch assembly located on the heat dissipation lamp holder and electrically connected between the LED lamp panel and the driving power supply; and a lens plate located on a side of the LED lamp panel emitting light and capable of abutting against the switch assembly. The switch assembly disconnects the LED lamp panel from the driving power supply when the lens plate is separated from the switch assembly, and the switch assembly electrically connects the LED lamp panel and the driving power supply when the lens plate abuts against the switch assembly.