Abstract: Using X80 pipeline steel plates as the test specimens, ANSYS finite element software was first applied to conduct transient analysis of MAG and MAG-MCRW welding processes for the simulation model, comparing the distribution of residual stresses in the welds. To validate the finite element model, the welding tests were conducted using MAG and MAG-MCRW processes. Residual stresses in the welds were measured using an X-ray diffractometer, and the residual stresses and welding deformations of the two processes were compared. Finally, in order to further explore the influence of MAG-MCRW key process parameters on weld residual stress, the numerical simulation methods were used to calculate the controlled rolling pressure, controlled rolling temperature and controlled rolling frequency respectively. The results show that the micro-controlled rolling welding process can change the stress state and effectively inhibit or reduce the generation of welding deformation. The optimal controlled rolling parameters for the experiment are:controlled rolling pressure of 0.5 MPa,controlled rolling temperature of 800-1050 ℃ and controlled rolling frequency of 70-100 Hz.