In respect of processing issue of drag reduction structure on oil and gas pipeline inner coating, a method of processing the drag reduction structure of bionic non-smooth surface on the coating surface of inner sides of pipeline was proposed. A structure model of inner sides of pipeline roll processing robot was established, and the movements of double cam component were proceed dynamics analysis. Combined with flow characteristics of the material, the flow characteristics of polymer coating material nearby the glassy state transformation temperature were analyzed. A mathematical model of the viscoelasticity of polymer was presented to describe the rheological behavior of polymer coating. Also, a method of numerical simulation was used to investigate the influence of controlling parameter on the hot rolled surface quality in the hot rolling process, and rolling experiment at the rolling speed of 0.5, 1.0, 1.5 rad/s was finished. The results showed that at constant temperature, the flow deformation of the polymer material was increasing with increasing time, and the stress relaxation phenomenon of Coating pit morphology suspended as the temperature decreased at the end of time. With the constant rolling speed, replication ratio of polymer coated pits increased with the rise of temperature. Also, the creep deformation speed rises when the temperature is high. Specially, when the rolling temperature is maintained in 2/3T of 150 ℃, the effect of morphology of Polymer coated pit obtains the best, and prolonging the dwell time can achieve the same filling effect at low rolling temperature. The pit morphology after rolling is closest to the ideal one at the rolling speed of 0.5 rad/s, which shows well the time dependence of polymer.