The invention discloses an information transmission method for welding a photovoltaic module to a lamination station. The information transmission method comprises the following steps of S1, operatinga welding station; and S2, after the assembly bar code is pasted to the lamination station, transferring the material information of the welding station to the assembly bar code. When a welding station is carried out, the MES system carries out material feeding operation, bar codes are fixed to a laminated template of the assembly, after the bar codes of the assembly are pasted to the laminated station, the bar codes of the assembly and the fixed bar codes are scanned into the MES system at the same time, and the MES system transfers material information contained in the fixed bar codes intothe bar codes of the assembly. By the adoption of the information transmission method for welding the photovoltaic module to the lamination station, the information inquiry and the analysis time can be shortened when workers conduct abnormal processing; the actions of physical tracing methods such as paper or cards placed by employees can be reduced; the system can be used for permanently storingthe information of the welding station, and the subsequent information calling and tracing are facilitated.