During the laser-induced solar front electrode polarization,the transmission mode and speed of the silver paste film will affect the morphology of the grid lines.In order to rationally design the mechanical transfer device,a simplified finite element model of silver paste film for two typical transmission methods in large-scale printing,namely linear transmission and circular transmission was established,and the healing characteristics of silver paste under certain acceleration were explored;under three different transmission speed curves,such as linear acceleration,exponential acceleration,S-type acceleration,the simulation experiments were carried out on the uniformity of silver paste film.The results show that at the same speed,due to the existence of centrifugal force,the uniformity change caused by the circular transmission method is more serious than that of the linear transmission method;in the linear transmission,when the maximum velocity is lower,the deformation of the film under the three speed curves is similar;as the speed increases,the deformation of the film under the linear acceleration curve is the smallest,and both exponential acceleration and S-type acceleration appear spill of silver paste.The linear transmission mode of the silver paste film under linear acceleration can maintain good uniformity when printing the front grid lines of photovoltaic silicon wafers.