Obtained is a structure of a piano action by which excellent playing reproducibility is secured even in a case of playing by repeatedly striking a key at an extremely high speed. In a piano action including a plurality of hammers 31 for striking keys, hammer shanks 32 that support the hammers turnably, hammer rails 1 that restrict the hammer shanks 32 from turning after the hammers strike strings, and hammer cushions (shock absorbing materials) 100 that are placed on the hammer rails and absorb motion energy generated by collision with the hammer shanks 32, the hammer cushions (shock absorbing materials) 100 are disposed at an angle so as not to become parallel to contact surfaces of the hammer shanks 32.