The invention discloses a portable hidden table lamp which comprises a table lamp base. A lamp base groove is formed in the table lamp base. A mounting base is arranged at the bottom of the lamp basegroove, a stretching rod is installed on the mounting base, a heat-dissipating transparent lampshade is installed at the top end of the stretching rod and is semicircular in shape, and a table lamp cover is arranged at the top of the heat-dissipating transparent lampshade. The heat-dissipating transparent lampshade is fixedly installed in the lamp base groove formed in the table lamp base throughthe stretching rod. When the table lamp is used, the heat-dissipating transparent lampshade is pulled out of the lamp base groove through the stretching rod, some small articles can be stored in the non-occupied lamp base groove, the lampshade retracts back to the lamp base groove when the table lamp is not used or carried, the size of the table lamp is decreased, the table lamp is convenient to carry, the heat-dissipating transparent lampshade retracts into the lamp base groove and is covered by the table lamp cover, the heat-dissipating transparent lampshade and an LED lamp can be protectedin the carrying process, and the portable hidden table lamp is simple in structure and convenient to use.