An ionic conduction structural member with a high ionic conductivity and a high charge/discharge efficiency and a secondary battery using the same are provided. The ionic conduction structural member comprises a polymer matrix, a solvent as a plasticizer and an electrolyte, wherein the polymer matrix comprises a polymer chain comprising a segment represented by the following general formula (1) and a segment represented by the following general formula (2): (wherein R1, R2, R4 and R5 are independently H or an alkyl group of 2 or less carbon atoms; R3 and R6 are independently an alkyl group of 4 or less carbon atoms; one of A and B is a group comprising —(CH2—CH2—O)m— and the other is a group comprising —(CH2—CH(CH3)—O)n—, A and B each forming a block; X is a group comprising —(CH2—CH2—O)k—; m and n are independently an integer of 3 or more; and k is an integer of 1 or more), and wherein a main chain part of the polymer chain and the side chain part of the general formula (1) have an orientation property and a crosslinked structure.