Column supported underground continuous wall

The invention relates to a post underground continuous wall which is constructed via basement reverse method. It comprises: the underground wall along the basement, which is formed by shallow wall and deep wall, while the shallow is at the upper part of underground continuous wall, with general structure to form the closed wall as baffling sand, water and filtration; and said deep wall is under the shallow wall which is a post support wall whose rock embedded sections are distantly arranged, to support the shallow wall and be used as the vertical support element, to effectively control the vertical distortion of upper part pf underground continuous wall. The shallow wall can reduce the height of underground continuous wall and the deep wall can reduce the number of rock-embedded sections with high cost and hard construction. The invention can reduce the cost and shorten the construction time.