A resistance structure, a resistance structure unit, an information identification device and a biosensor. The resistance structure comprises: a first electrode (1); a second electrode (2); a plurality of first resistance elements (3), wherein one end of each of the first resistance elements (3) is connected to the first electrode (1), and the other end thereof is connected to the second electrode (2); a first fracture (11), the first fracture (11) dividing the first electrode (1) into a first part (111) and a second part (112), the first fracture (11) being located between two adjacent first resistance elements (3) or disconnecting at least one first resistance element (3) from the first electrode (1); and a third electrode (4), wherein the third electrode (4) is connected to the first part (111) of the first electrode (1).