We investigate the chiral (flavor) structure of tetraquarks, and study chiral transformation properties of the "non-exotic" [(3, 3) ⊕ (3,3)] and [(8, 1) ⊕ (1, 8)] tetraquark chiral multiplets. We find that as long as this kind of tetraquark states contains one quark and one antiquark having the same chirality, such as q L q LqLqR + q R q RqRqL , they transform in the same way as the lowest levelqq chiral multiplets under chiral transformations. There is only one [(3, 3) ⊕ (3,3)] chiral multiplet whose quark-antiquark pairs all have the opposite chirality (q L q LqRqR + q R q RqLqL ), and it transforms differently from others. Based on these studies, we construct local tetraquark currents belonging to the "non-exotic" chiral multiplet [(3, 3) ⊕ (3,3)] and having quantum numbers J P C = 1 −+ .