Foldable desk

A foldable desk comprising:

• a desk top having a support rod in an underside thereof, said desk top having a retaining block retaining said support rod, said retaining block having an engagement portion;
• a support post formed of an outer tube and an inner tube slidably received in said outer tube, said inner tube having a retaining block at a top end thereof, said retaining block of said inner tube having an engagement portion, said inner tube supporting said desk top in such a manner that said retaining block of said inner tube is fastened with said retaining block of said desk top by a fastening bolt, the engagement portions of the retaining blocks of said inner tube and said desk top being disengageably meshed with each other;
• a support seat fastened at a bottom end of said outer tube of said support post, said support seat having a locating slot and a locating hole;
• and
• a base having a pair of lugs, one of said pair of lugs having an inclined guide hole, said base having a locating member formed of a rod and a press block and an eccentric knob, said locating member rotatably fastening said support seat of said outer tube of said support post by a retaining rod received in said pair of lugs such that one end of said retaining rod is located in said locating hole of said support seat, a projection of said retaining rod being slidably received in said inclined guide hole of one of said pair of lugs, said press block of said locating member being located in said locating slot of said support seat whereby said press block is pressed against by said eccentric knob when said eccentric knob is turned.