A damping valve, comprising: a valve disc including a passage (3, 4) and a valve seat (2c, 2d) configured to surround an outlet end of the passage (3, 4); an annular leaf valve (Ve, Vp, Ve1, Vp1, Ve2, Vp2) laminated on the valve disc, the annular leaf valve (Ve, Vp, Ve1, Vp1, Ve2, Vp2) configured to separate from/sit on the valve seat (2c, 2d) to open/close the passage (3, 4); and a biasing part (Se, Ce, Sp, Cp, 24, Ie, Ip, Pc, Ep, Ee, 6) configured to exert a variable biasing force on the leaf valve (Ve, Vp, Ve2, Vp2) toward the valve disc, wherein in a state in which a load does not act on the leaf valve (Ve, Vp, Ve2, Vp2), a gap is provided between the leaf valve (Ve, Vp, Ve1, Vp1) and the valve seat (2c, 2d); wherein the damping valve further comprises: a spacer (61, 65, 262, 267) laminated on a side of the leaf valve (Ve, Vp, Ve2, Vp2) opposite to the valve disc, the spacer (61, 65, 262, 267) having an outer diameter smaller than an outer diameter of the leaf valve (Ve, Vp, Ve2, Vp2); and an annular plate (62, 66, 263, 268) laminated on the side of the leaf valve (Ve, Vp, Ve2, Vp2) opposite to the valve disc, the annular plate (62, 66, 263, 268) is mounted radially outward of the spacer (61, 65, 262, 267), the annular plate (62, 66, 263, 268) being configured to slide in an axial direction on an outer periphery of the spacer (61, 65, 262, 267), characterized in that an inner diameter of the annular plate (62, 66) is smaller than an outer diameter of an inner peripheral seat part (2f, 2h) provided to the valve disc more inside than the passage (3, 4), the inner peripheral seat part (2f, 2h) being configured to support an inner periphery of the leaf valve (Ve. Vp), and an outer diameter of the annular plate (62, 66) is greater than an inner diameter of the valve seat (2c, 2d). a valve disc including a passage (3, 4) and a valve seat (2c, 2d) configured to surround an outlet end of the passage (3, 4); an annular leaf valve (Ve, Vp, Ve1, Vp1, Ve2, Vp2) laminated on the valve disc, the annular leaf valve (Ve, Vp, Ve1, Vp1, Ve2, Vp2) configured to separate from/sit on the valve seat (2c, 2d) to open/close the passage (3, 4); and a biasing part (Se, Ce, Sp, Cp, 24, Ie, Ip, Pc, Ep, Ee, 6) configured to exert a variable biasing force on the leaf valve (Ve, Vp, Ve2, Vp2) toward the valve disc, wherein in a state in which a load does not act on the leaf valve (Ve, Vp, Ve2, Vp2), a gap is provided between the leaf valve (Ve, Vp, Ve1, Vp1) and the valve seat (2c, 2d); wherein the damping valve further comprises: a spacer (61, 65, 262, 267) laminated on a side of the leaf valve (Ve, Vp, Ve2, Vp2) opposite to the valve disc, the spacer (61, 65, 262, 267) having an outer diameter smaller than an outer diameter of the leaf valve (Ve, Vp, Ve2, Vp2); and an annular plate (62, 66, 263, 268) laminated on the side of the leaf valve (Ve, Vp, Ve2, Vp2) opposite to the valve disc, the annular plate (62, 66, 263, 268) is mounted radially outward of the spacer (61, 65, 262, 267), the annular plate (62, 66, 263, 268) being configured to slide in an axial direction on an outer periphery of the spacer (61, 65, 262, 267), characterized in that an inner diameter of the annular plate (62, 66) is smaller than an outer diameter of an inner peripheral seat part (2f, 2h) provided to the valve disc more inside than the passage (3, 4), the inner peripheral seat part (2f, 2h) being configured to support an inner periphery of the leaf valve (Ve. Vp), and an outer diameter of the annular plate (62, 66) is greater than an inner diameter of the valve seat (2c, 2d). a spacer (61, 65, 262, 267) laminated on a side of the leaf valve (Ve, Vp, Ve2, Vp2) opposite to the valve disc, the spacer (61, 65, 262, 267) having an outer diameter smaller than an outer diameter of the leaf valve (Ve, Vp, Ve2, Vp2); and an annular plate (62, 66, 263, 268) laminated on the side of the leaf valve (Ve, Vp, Ve2, Vp2) opposite to the valve disc, the annular plate (62, 66, 263, 268) is mounted radially outward of the spacer (61, 65, 262, 267), the annular plate (62, 66, 263, 268) being configured to slide in an axial direction on an outer periphery of the spacer (61, 65, 262, 267), characterized in that an inner diameter of the annular plate (62, 66) is smaller than an outer diameter of an inner peripheral seat part (2f, 2h) provided to the valve disc more inside than the passage (3, 4), the inner peripheral seat part (2f, 2h) being configured to support an inner periphery of the leaf valve (Ve. Vp), and an outer diameter of the annular plate (62, 66) is greater than an inner diameter of the valve seat (2c, 2d).