The invention relates to a graphene batch assembly technology, in particular to a fast, automatic and large-scale graphene assembly method based on optical dielectrophoresis. The method is mainly usedin the field of graphene device processing and manufacturing. The optical dielectrophoresis and microfluidic technologies are combined; through the principle that the oxidation-reduction reaction isperformed to generate Ag by using an AgNO3 solution through a micropump under the optical dielectrophoresis guide, an Ag electrode is automatically constructed on graphene, so that the graphene batchassembly is realized. The graphene batch assembly can be fast, controllably and automatically realized at low cost; the important practical significance is realized on the graphene device manufacturing.