A hinge includes a leaf unit (2), two action units (3, 6, 7) and an axle unit (4) . The leaf unit (2) includes first and second leaves (21, 22) that are rotatable relative to each other. The first leaf (21) has a first barrel (211). The second leaf (22) has a second barrel (221). The action units (3, 6, 7) are co-rotatable with the first leaf (21) . The axle unit (4) includes a fixing member (41) mounted in the second barrel (221) and co-rotatable with the second leaf (22), and two axles (42, 43, 44) respectively associated with the action units (3, 6, 7) and co-rotatable with the fixing member (41).