To provide a method for manufacturing a fiber-reinforced polyamide resin composition excellent in mechanical strength.

This method for manufacturing a fiber-reinforced polyamide resin composition comprises a step of producing pellets by cutting a polyamide depositing fiber bundle that is obtained by drawing a reinforced fiber bundled two or more with a hot-melted polyamide resin through a through-hole of a dies, and a step of heating the pellets at a temperature lower than a melting point of the polyamide resin under a low oxygen condition.