The utility model discloses a high-efficiency light-emitting diode (LED) multifunctional digital desk lamp with color temperature capable of being adjusted. The high-efficiency LED multifunctional digital desk lamp with the color temperature capable of being adjusted is composed of a lamp holder, an adjusting support arm rod, a sound box cylinder, a base and a power adaptor. The head holder is composed of two kinds of color temperature LED lamp pieces arranged on a lighting printed circuit board (PCD), an upper double-tube connector and a lower double-tube connector of the adjusting support arm rod respectively supports the lamp holder and are hinged at the top end of the sound box cylinder, the inner sides of the front cover plate and the rear cover plate of the sound box cylinder are respectively provided with a horn, an infrared receiver and a digital-played singlechip circuit board, and the sound box cylinder is provided with a universal serial bus (USB) socket, a storage card socket, a power adaptor socket and a power supply. The base is composed of a control panel provided with touch control keys, a base plate provided with a temperature sensor, an LED display screen and a desk lamp controlled PCB, a metal weight balancing block and a base board. The high-efficiency LED multifunctional digital desk lamp is high in efficiency, energy-saving, free of frequent flicker and free of ultraviolet, does not generate light pollution and heat radiation, is environment-friendly and long in service life. Various colors of light can be chosen according to various seasons, and multiple functions of setting studying or rest time, displaying environmental temperature, charging a cell phone, rereading and a digital MP3 can be achieved.