An LED light lamp includes a lamp body, an adjusting rod, a number of light panels, and at least one rheostat. The lamp body defines a chamber therein. The adjusting rod includes a sliding bar, and an adjustable panel extending outwards from and surrounding an end of the sliding bar. The sliding bar is slidably received in the chamber of the lamp body. The adjustable panel includes an annular periphery. Each light panel includes a number of LED chips distributed on the light panel, and is pivotally mounted on the lamp body and against the annular periphery of the adjustable panel. A rheostat is electrically coupled into a power supply circuit of the LED chips. The resistance of the rheostat is adjusted to control the current flowing through the LED chips by the sliding bar when the sliding bar slides in the lamp body.