2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/220347A positive definite even Hermitian lattice is called \emph{even universal} if it represents all even positive integers. We introduce a method to get all even universal binary Hermitian lattices over imaginary quadratic fields $\Q{-m}$ for all positive square-free integers $m$ and we list optimal criterions on even universality of Hermitian lattices over $\Q{-m}$ which admits even universal binary Hermitian lattices.11 PagesNumber Theory11E39, 11E20, 11E41text