Blue GaN-based power LEDs are biased by negative human body mode electrostatic-discharge (ESD) before and during the aging time, and the characteristics of LEDs are analyzed before and after aging experiment and ESD stress. It is found that the generation of defects in active region and cladding layers after ESD stress could finally lead to degradation of LEDs. The defects induced by ESD could be restored partly in the early aging. However, these defects can cause parameters drift more seriously. Moreover, LEDs could be more sensitive to ESD stress and have lower antistatic ability during aging.