The present invention discloses an LED lamp independently and stepwise adjustable in beam angle, the LED lamp comprises a lamp body, a lens module and an LED light source-driver assembly installed inside the lamp body, the LED light source-driver assembly comprising an LED light source and an LED driver, and the lens module is an independent module which is detachably assembled with the light source-driver assembly; wherein the lens module can independently perform stepwise adjustment on the beam angle of the LED lamp, and the stepwise adjustment of the beam angle is realized by stepwise adjustment operation on the lens module.