Damping device for damping motion of movable furniture parts. A piston mounted in housing in longitudinally displaceable manner which, due lo displacement, forms two variable-size working chambers on opposite sides with damping medium. Via overflow-connection, throttled transfer of damping medium is possible between two working chambers. Piston plunger, fed selectively, is connected on one side of pislon. Via the outer end of piston plunger, the motion of the furniture part to be damped is transferred to the piston. On side of piston, an elongated adjustment shaft is connected to the piston plunger. Free end of plunger is fed in sealed manner out of front face lying opposite front face that is sealed on the piston plunger side. The end of adjustment shaft engages with a passage duct connecting two working chambers and forms a variable-sized throttle cross section in the passage duct, making adjusting motion of shaft relative to piston.