A method for manufacturing a high pressure tank capable of uniformly heating a thermosetting resin in a short time is provided. A method for manufacturing a high-pressure tank including: a step (a) of preparing a tank intermediate product including a fiber-reinforced resin layer formed by winding a carbon fiber impregnated with a thermosetting resin around a liner including a cap attached thereto; and a step (b) of performing a process for thermosetting the fiber-reinforced resin layer of the tank intermediate product by induction-heating the fiber-reinforced resin layer using induction-heating means, in which: the induction-heating means includes first induction-heating means for induction-heating a trunk part of the tank intermediate product and second induction-heating means for induction-heating a dome part of the tank intermediate product; and a temperature of the trunk part of the tank intermediate product and a temperature of the dome part thereof are controlled independently.