The invention relates to a girder string continuous cable stayed bridge which belongs to the field of bridge construction. The girder string continuous cable stayed bridge comprises a bridge deck, a plurality of bridge towers, two girders horizontally arranged at both sides of the bridge deck, a plurality of stay cables connecting the bridge towers to the girders and a plurality of web members connected under the girders and arranged along the span direction of the girders, wherein each stay cable is a continuous cable formed by an upper string cable and a lower string cable; and the girders, the web members and the lower string cables form a girder string. In the invention, the web members are used for supporting the girders in a plurality of points, and the mechanical behavior of the web members can be improved. The girder string continuous cable stayed bridge is a novel structure system combining a cable stayed bridge and the girder string, is a breakthrough and development of the traditional cable stayed bridge, and has the advantages of reasonable structure, uniform stress, light self-weight, high strength, high spanning capability, good wind resistance, fatigue resistance, corrosion resistance, and the like.