Shock absorber

Disclosed herein is a shock absorber. The shock absorber is provided to include a damping tube provided in a compression chamber and formed in a hollow shape to have a damping chamber therein, a damping piston provided to slidably move along an inner side of the damping tube and configured to pressurize a working fluid accommodated in the damping chamber, an extension rod configured to connect the damping piston and a piston rod, and at least one damping hole formed through the damping tube to allow the damping chamber and the compression chamber to communicate with each other.