Abstract: An improved structure of a foldable comb having a handle and a hollowed frame pivotally connected therewith, the hollowed frame has an elastic member for implanting thereon a plurality of brush pins. The handle provides an eccentric wheel at the pivotal connection thereof, a push rod having a block thereon can be moved with the eccentric wheel and having an elongated shank thereof inserted into a rod sheath beneath an elastic member in a cavity of the hollowed frame to move therewith; therefore a plurality of brush pins on the elastic member being capable of stretching automatically when the handle and the hollowed frame being spreaded and being capable of contracting automatically for storage when the handle and the hollowed frame being folded.