Research conclusions：The analyses are made for the space stress-distribution and spatial variation of the longitudinal normal stress and transverse compressive stresson the roof and the shear stresson the sternum of large-span V-shaped continuous rigid frame arch composite structure bridge and their change regulations during the whole construction process. From the analyses the following conclusions are drawn: Firstly, the longitudinal normal stress on the roof of main girder is distributed along the transverse direction with unevenness, and the shear lag effects of the stress are obvious, which is different from the predicted results with elementary beam theory. Secondly, the transverse compressive stress of the main girder is not big and the uneven level of stress distribution on the roof is more than that on the floor.Thirdly, the shear stress distribution on the tri-web of single-box and double-booth section girder continuously changes and the shear stress on center web is slightly greater than that on the side web with good regulation. Lastly, during construction the envelope of longitudinal normal stress reflects the working condition with the maximum tensile stress and maximum compressive stress and this provides a theoretical basis for construction control.