The reinforced methods and volume were completely identical in order to explore the factors of the damaged degree and pouring depth (Tab.1). J1 and J2 carried out epoxy injection. The details of reinforced methods were as follows: (1) BFRP sheets are applied in L shape to upgrade the joints with two layers. One side was along with the steel bar in the column and the other side was within the 300 mm or 500mm in the frame beams. In this step the BFRP has been applied on the top and bottom concrete surfaces. (2) BFRP wraps were provided over the inner layers, which was perpendicular to the axis of the members. The anchorage length was 200mm.