The present invention provides a foldable keyboard comprising a plurality of sections, a flat cable electrically connected between the sections, and a folding component connected between the sections. The folding component comprises fixing parts corresponding to the sections, and a connecting part connected between the fixing parts. The sections are correspondingly fixed on the fixing parts of the folding component. The connecting part is located between the sections. The sections pivot about the connecting part therebetween for folding or unfolding the foldable keyboard. The present invention adopts a folding component to connect the sections of the keyboard for folding the sections of the keyboard thereby being portable. The folding component is easy to manufacture with low cost, effectively reduces the thickness of the keyboard and extends the service life of the keyboard.