A light green wall structure includes lateral and longitudinal support members and support containers. The lateral and longitudinal support members are combined with fixing elements to construct a vertical skeleton. The longitudinal support member has openings. Each opening has a notch toward to the edge of the longitudinal support member, and a hook is thus formed. The support container has a first lateral surface, a longitudinal surface, a second surface and an oblique surface sequentially adjacent. The first and second lateral surfaces are bent in two opposite bending directions, and the oblique surface is bent obliquely outward. Additionally, the support container has meshes for accommodating the hooks such that the support containers are horizontally and detachably engaged with the longitudinal support members. The second lateral surface is used to support plant containers. The present invention provides a planting function, and is particularly easily assembled and dissembled.