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The purpose of this study is to investigate the shear lag phenomena of high-rise buildings of tube structural system. The tube structural system is widely used in high-rise building system. The structures act like cantilevered box beams. The shear lag in tube system prevents the tube structures from idealized tube behaviors as a cantilevered box beam. This study analyzed 14 tube structures to investigate the shear lag phenomena of tube structures with shear wall. To eliminate irrational analysis results, new shear lag coefficient is suggested instead of existing coefficients. Analysis parameters include stiffness factor of frame, stiffness factor of wall, stiffness ratio of beam and column, the number of stories and bays, and the arrangement of shear wall. Analysis results shows that stiffness ratio of beam and column is negligible, and increase of the number of bays caused adverse effects to the shear lag phenomena. However, increase of the other factors such as stiffness factor of frame, stiffness factor of wall, and the number of stories decrease the shear lag effects. Arrangement of shear wall parallel to lateral loads decreases the shear lag phenomena.