Let \({\cal C} = ({\cal C},\mathbb{E},\mathfrak{s})\) be an extriangulated category. In this paper, we give the notion of ideal balanced pairs in \({\cal C}\) and some equivalent characterizations of ideal balanced pairs. We show that there is a one-to-one correspondence between balanced pairs and ideal balanced pairs satisfying certain conditions when \({\cal C}\) is of a negative first extension. We also prove that there is a bijective correspondence between ideal balanced pairs ( \({\cal I},{\cal J}\) ) and additive subfunctors \(\mathbb{F} \subseteq \mathbb{E}\) with enough projective morphisms and enough injective morphisms in \({\cal C}\) .
