An exemplary LED table lamp includes a hollow lamp housing, a lamp base supporting the lamp housing, an LED module received in the lamp housing for emitting light, and a controlling module electrically connecting to the LED module for automatically adjusting a light intensity of the LED table lamp. The controlling module includes a sensor configured for sensing the light intensity of a working surface of the LED table lamp, and obtaining data corresponding to the light intensity of the working surface of the LED table lamp, a controller comparing the data obtained by the sensor with predetermined data and giving an adjusting order, and an adjusting member adjusting current supplied to the LED module according to the adjusting order from the controller.