The invention discloses a freely height-adjustable energy-saving and environment-friendly
desk, aiming at solving problems of the prior art that desks are non-adjustable in height, energy waste is caused and the desks are single in function. The
desk comprises a
desk panel, a desk supporting leg and a table lamp, wherein the desk supporting leg comprises a leg pole, a socketed leg, non-slip pads,a socketed groove, locating blind holes, locating through holes and locating bolts; the table lamp comprises a table lamp embedding base, a lamp holder, a
clock, a table lamp rod, a table lamp shade,a COB
light source which is arranged on the table lamp shade and a
power cord which is arranged at the other end of the lamp holder; the
power cord runs through the lamp holder and the table lamp rodand is connected to the COB
light source; an
infrared sensor is arranged on the lamp holder; a
microprocessor, which is in
signal connection to the
infrared sensor, is arranged in the lamp holder; a
control switch, which is connected to the
microprocessor, is arranged on the
power cord in the lamp holder; and a micro negative-
ion air purifier, which is connected to the power cord, is arranged at the top of the table lamp shade. The desk provided by the invention is simple in structure, scientific and reasonable in design and convenient to use; height of the desk can be freely adjusted; and meanwhile, the desk is energy-saving and environment-friendly.