PROBLEM TO BE SOLVED: To provide a method for manufacturing a high-pressure tank capable of preventing the occurrence of dents and holes on the outer surface of a liquid gasket applied to a boundary portion between a liner and a base. A method for manufacturing a high-pressure tank 10 having a liner 20 and a base 21, wherein a volatile solvent is applied to a gap S between the liner 20 and the base 21 (step S1), and a gap. It is characterized by including a step of applying the FIPG so as to cover the portion S (step S2) and a step of curing the FIPG (step S3). [Selection diagram] Fig. 3
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