The invention discloses a hinge structure (13) used to connect two members, comprising a first fixing piece (14) fixed on a first member, a second fixing piece (15) fixed on a second member, an articulated piece (16), a first connecting device used to realize rotatable connection of the first fixing piece and the articulated piece as well as a second connecting device used to realize deflectable connection of the articulated piece and the second fixing piece, wherein the second connecting device which is used to adjust the preset space between the two members comprises two corresponding bent connection surfaces (23, 26) extending parallel to a deflection axis; the first connection surface (23) is arranged on the articulated piece, while the second connection surface (26) is arranged on thesecond fixing piece; in order to realize simpler design of the structure of the hinge structure, at least one section (28) of at least one connection surface is eccentric in deflection direction (31). In addition, the invention also relates to a protective device, wherein a lid cover (12) and a frame (11) of the protective device are connected through the hinge structure (13).