In this article, the structure of (π,π)-seminearring is introduced which is a generalization of (π,π)-semiring. The purpose of this research is to develop some theories of (π,π)-seminearring. In particular, the concepts of (π,π)-seminearring, (π,π)-subseminearring, (π,π)-ideal, (π,π)-seminearring with unit, homomorphisms of (π,π)-seminearring, construction of (π,π)-seminearring factor of (π,π)-seminearring by congruence relation, and some of its interesting properties are given. The method used in this study is to adopt the theory in (π,π)-semiring.