  In this paper, we study almost regular Landsberg general
$(\alpha,\beta)$-metrics in Finsler geometry. The corresponding equivalent
equations are given. By solving the equations, we give the classification of
Landsberg general $(\alpha,\beta)$-metrics under the conditon that $\beta$ is
closed and conformal to $\alpha$. Under this condition, we prove that regular
Landsberg general $(\alpha,\beta)$-metrics must be Berwaldian when the
dimension is greater than two. For the almost regular case, the classification
also is given and some new non-Berwaldian Landsberg metrics are found.
