The invention relates to a lamination technique of a thin film solar cell, belonging to the technical field of thin film solar cells. The technical scheme of the lamination technique is specifically as follows: (1) depositing a transparent front electrode layer on a glass substrate; (2) then manufacturing a thin film photoelectric conversion layer; (3) depositing a back electrode layer; (4) connecting a lead; (5) laying a white rubber film; (6) laying a non-white rubber film; (7) laying a back panel; (8) laminating, adhering the cell together with the back panel by using a dual-layer rubber film; (9) processing edges; and (10) mounting a wire connecting box to finish the manufacturing of a solar cell module. The lamination technique disclosed by the invention has the advantages that: the production cost of the thin film solar cell is reduced; a white Polyvinyl Butyral (PVB) thin film is much more expensive than a transparent PVB thin film, so that the production cost can be reduced effectively by the application of a layer of relatively thin white PVB thin film and a layer of relatively thin transparent PVB thin film; two technique processes, i.e., screen printing of titanium white and curing of the titanium white in a curing oven are omitted, so that cost is reduced, environmental pollution is reduced and production efficiency is increased; and variable appearances of the thin film solar cell are realized by the application of a colored rubber film.