A damping device (20, 200, 300, 400, 500, 600), comprising: a housing (22, 202, 602) having an inner wall (38, 604), a chamber (36, 204) being defined by the inner wall (38, 604) and having a damping medium filled therewith; a piston (24, 208, 304, 410, 508) movable in the chamber (36, 204) of the housing (22, 202, 602), the piston (24, 208, 304, 410, 508) comprising at least one passage (50, 212, 322, 414, 510) for allowing the damping medium to pass through, wherein the piston (24, 208, 304, 410, 508) is configured to be moved in the chamber (36, 204) of the housing (22, 202, 602) in a substantially linear direction; and a controller disposed in the chamber (36, 204) of the housing (22, 202, 602), the controller comprising a control member (30, 210, 318, 402, 502) and a separate resilient member (32, 302, 404), wherein a space is defined by the control member (30, 210, 318, 402, 502), the space is configured to accommodate the resilient member (32, 302, 404), wherein the resilient member is a disc spring; wherein when the piston (24, 208, 304, 410, 508) is moved relative to the housing (22, 202, 602) by a damping speed, the control member (30, 210, 318, 402, 502) is moved toward the passage (50, 212, 322, 414, 510) of the piston (24, 208, 304, 410, 508) or closes a portion or all portions of the passage (50, 212, 322, 414, 510) of the piston (24, 208, 304, 410, 508) in response to the damping speed; wherein when the control member (30, 210, 318, 402, 502) closes the portion or the all portions of the passage (50, 212, 322, 414, 510) of the piston (24, 208, 304, 410, 508), the control member (30, 210, 318, 402, 502) is capable of controlling an amount of the damping medium passing through the passage (50, 212, 322, 414, 510) of the piston (24, 208, 304, 410, 508); wherein the resilient member (32, 302, 404) is configured to generate a resilient force to the control member (30, 210, 318, 402, 502) in response to the damping speed, the damping device (20, 300) further comprises a base (28, 314) movable in the chamber (36, 204), and the controller is disposed between the piston (24, 304) and the base (28, 314), wherein the base (28, 314) is connected to the piston (24, 304) through an extending portion (52, 316), and the controller is movably mounted on the extending portion (52, 316), the control member (30, 210, 318, 402, 502) and the resilient member (32, 302, 404) are located between the piston (24, 304) and the base (28, 314), the control member (30, 210, 318, 402, 502) and the resilient member (32, 302, 404) are movable between the base (28, 314) and the piston (24, 304). a housing (22, 202, 602) having an inner wall (38, 604), a chamber (36, 204) being defined by the inner wall (38, 604) and having a damping medium filled therewith; a piston (24, 208, 304, 410, 508) movable in the chamber (36, 204) of the housing (22, 202, 602), the piston (24, 208, 304, 410, 508) comprising at least one passage (50, 212, 322, 414, 510) for allowing the damping medium to pass through, wherein the piston (24, 208, 304, 410, 508) is configured to be moved in the chamber (36, 204) of the housing (22, 202, 602) in a substantially linear direction; and a controller disposed in the chamber (36, 204) of the housing (22, 202, 602), the controller comprising a control member (30, 210, 318, 402, 502) and a separate resilient member (32, 302, 404), wherein a space is defined by the control member (30, 210, 318, 402, 502), the space is configured to accommodate the resilient member (32, 302, 404), wherein the resilient member is a disc spring; wherein when the piston (24, 208, 304, 410, 508) is moved relative to the housing (22, 202, 602) by a damping speed, the control member (30, 210, 318, 402, 502) is moved toward the passage (50, 212, 322, 414, 510) of the piston (24, 208, 304, 410, 508) or closes a portion or all portions of the passage (50, 212, 322, 414, 510) of the piston (24, 208, 304, 410, 508) in response to the damping speed; wherein when the control member (30, 210, 318, 402, 502) closes the portion or the all portions of the passage (50, 212, 322, 414, 510) of the piston (24, 208, 304, 410, 508), the control member (30, 210, 318, 402, 502) is capable of controlling an amount of the damping medium passing through the passage (50, 212, 322, 414, 510) of the piston (24, 208, 304, 410, 508); wherein the resilient member (32, 302, 404) is configured to generate a resilient force to the control member (30, 210, 318, 402, 502) in response to the damping speed, the damping device (20, 300) further comprises a base (28, 314) movable in the chamber (36, 204), and the controller is disposed between the piston (24, 304) and the base (28, 314), wherein the base (28, 314) is connected to the piston (24, 304) through an extending portion (52, 316), and the controller is movably mounted on the extending portion (52, 316), the control member (30, 210, 318, 402, 502) and the resilient member (32, 302, 404) are located between the piston (24, 304) and the base (28, 314), the control member (30, 210, 318, 402, 502) and the resilient member (32, 302, 404) are movable between the base (28, 314) and the piston (24, 304).