The present disclosure discloses a keyswitch with supporting mechanism. The keyswitch comprising a supporting mechanism disposed between the keycap and the baseplate, wherein the keycap is able to move up and down relative to the baseplate, wherein the supporting mechanism comprises a first supporting element, on which two opposite first side surfaces respectively comprise a first connecting part; and a second supporting element, on which two opposite second side surfaces respectively comprise a second connecting part, the first connecting parts are pivotally connected to the corresponding second connecting parts, wherein two protrusions are respectively disposed on each of the two first side surfaces of the first supporting element, two smooth surfaces are respectively formed on each of the two protrusions, and the first connecting parts are respectively disposed on each of the two protrusions.