Method for manufacturing foam molded body

A method for manufacturing a foam molded body to obtain a foam molded body in which a portion of an embedded member is exposed from a foam body by use of a mold, the method comprising:

• a foam raw material foaming process of placing the embedded member in a cavity formed inside the mold so that the portion of the embedded member is at a higher position than a bottom surface of the cavity and foaming a foam raw material in the cavity;
• and a gas injection process of injecting a gas toward the portion of the embedded member in the cavity, wherein an injection pressure of the gas is a pressure that is equivalent to a foaming pressure of the foam raw material, the injecting of the gas is started at a point in time when the foam raw material starts to react and is continued at least until a rise time of the foam raw material elapses, and the gas is injected for an injection time adjusted according to a length of an exposed dimension of the portion of the embedded member.