The invention discloses a rotating and plug-unplug combination type LED illumination device. The rotating and plug-unplug combination type LED illumination device comprises a base, a vertical rod, a folding shaft and a lamp base, the vertical rod, the folding shaft and the lamp base are each provided with a protruding head, a groove, a wire hole, an annular contact plate, a telescopic contact terminal and a wire, the protruding heads and the grooves are formed in the two ends of the vertical rod, the folding shaft and the lamp base correspondingly, the annular contact plates are arranged at the protruding head ends, the telescopic contact terminals are arranged in the grooves, and the annular contact plates and the telescopic contact terminals are connected in a one-by-one correspondence mode through the wires; the vertical rod, the folding shaft and the lamp base are connected end to end; and the wires are provided with live wires, zero wires and data wires, a first circuit board is provided with a signal transmission module, the base is provided with a signal interface connected with the signal transmission module, and a second circuit board is provided with a signal conversion module connected with an LED power supply. Through modular arrangement of a table lamp, on-demand assembly is conducted, and the rotating and plug-unplug combination type LED illumination device is suitable for being flexibly demounted and is convenient to store and carry; and the plug-connection mode of a product is easy and convenient to operate, the structure is compact, adjusting is convenient,diversified control can be achieved, expansion of the function of the table lamp is facilitated, and application prospects are wide.