Borate solution is a much peculiar substance, in which not only hydrated cation but also varied borate speciation such as [B3O3(OH)4–], [B4O5(OH)42–], [B(OH)4–] and [B(OH)3] are formed, moreover, the borate ions transform mutually as the change of the concentration and pH. Borate solution is thus a "mixture" and exist via the competitive reactions as self-hydrolysis, self-condensation and self-depolymerization etc. we will use full 2nd order different H/D isotopic substitution method on SANDALS to obtain the short-range order and or medium-range order interaction of [B(OH)4–] and boron-oxygen six-membered ring [B3O3(OH)4–], [B4O5(OH)42–]. The ultimate goal of this experimental study is to achieve a description of the asymmetric hydration structure of the boron-oxygen six-membered ring at the molecular level, which is the chemical nature of the particularity of borate solution.