A method for manufacturing a ferroelectric capacitor in accordance with the present invention includes: (a) a step of forming a ferroelectric laminated body by successively laminating a lower electrode layer, a ferroelectric layer and an upper electrode layer over a base substrate; (b) a step of patterning at least the upper electrode layer and the ferroelectric layer by dry etching; (c) a step of coating a coating composition including a compound having an element composing the ferroelectric layer at least on a side wall of the ferroelectric layer; and (d) a step of thermally treating the coating composition, to crystallize the coating composition coated on the side wall of the ferroelectric layer.