The manufacture of a lithium ion secondary battery in which a positive electrode, a negative electrode, and a separator can be stuck fast to one another without using a solid casing and without increasing the resistance between electrodes, and the higher energy density and the thinning are possible, and which can take optional form and is excellent in charge and discharge properties. This manufacture of the lithium ion secondary battery has the process of preparing a positive electrode (3) where a positive electrode active material layer (7) is joined with a positive electrode collector (6), a negative electrode (5) where a negative electrode active material (9) is joined with a negative collector (10), and a separator (4) for retaining the electrolytes including lithium ions, being arranged between the positive electrode (3) and the negative electrode (5), the process of supplying adhesive resin solution applied on the separator with a second solvent different from a first solvent after applying the adhesive resin solution, where adhesive resin (11) is dissolved in the above first solvent, to the separator (4), and the process of forming an electrode laminate by sticking the positive electrode (3) and the negative electrode (5) to the separator (4).