The invention relates to a multi-dimensional filler ecological type protected slope construction method suitable for repairing riverways in towns. The method comprises the following steps of: taking an ecological bag structure as a support; dividing a protected slope structure into four areas: an upright protector area, a low water level influence area, a normal water level influence area and a maximum flood level influence area; selecting matrixes adapted to structures and functions of the areas as fillers; recovering submerged plants, emergent aquatic plants and wetland plantsbog plants on a protected slope from bottom to top; and simultaneously, setting facilities such as a buffering platform and a domestic sewage distribution pipe, and constructing a zigzag river corridor. According to the multi-dimensional filler ecological type protected slope construction method suitable for repairing the riverways in the towns, the mechanical stability of the slope can be improved, the anti-erosion performance of the protected slope of a river is enhanced; the living condition of a river waterside variation area is effectively recovered, and the completeness of a river ecological system is ensured; and the matrixes of the protected slope, microorganisms and vegetation have important interception conversion effect on coastwise non-point source pollution, so that the river self-cleaning capacity is enhanced, the service function of a river ecological system is improved, materials are selected according to circumstances, the construction is simple and convenient, the manufacturing cost is low, and wide market value and environmental benefit are realized.