A molding container including a lid that can be smoothly pulled out of a molded frozen dessert with no damage to the molded frozen dessert is provided. A frozen dessert container assembling method of assembling: a main body capable of containing a frozen dessert； a first lid including a first peripheral edge portion and a protrusion that forms an inner space on the inner radius side of the first peripheral edge portion； and a second lid including a second peripheral edge portion and a cover portion is provided. This method includes the steps of: feeding the main body； causing the protrusion of the first lid to be contained in the main body and fitting the first peripheral edge portion and an opening of the main body to each other； and covering the inner space of the first lid with the cover portion of the second lid and fitting the first peripheral edge portion and the second peripheral edge portion to each other.
