Creep curve is fitted by MATLAB based on CEB-FIP(2010), and shrinkage and creep calculating program is designed by using ABAQUS. Based on parameter verification,vertical deformation component of column and frame beam models with rebar or without rebar under different parameters considering creep and shrinkage were obtained, deformation reduction factor considering the influence of steel bar is proposed and its influencing parameters are analyzed, and the column reduction coefficient formula under different factors is fitted. The results show that the relation between dimension, concrete strength, and reduction factor is quadratic curve, the relation between ratio of reinforcement in column, humidity and reduction factor is linear, while axial compression ratio has little effect on reduction coefficient. The relation between beam section height, concrete strength, ratio of reinforcement in frame beam and reduction factor is quadratic curve, the relation between humidity and reduction factor is linear, while the vertical load on beam has little effect on reduction coefficient. The column reduction factor formula can better consider the effect of steel bars on the shrinkage and creep of concrete.