Abstract: A halogen-free flame-retardant polyamide composition which generates no halogen compound during combustion. The composition has excellent thermal stability during high-temperature molding and is capable of showing high flame retardancy when burned. The composition is effective in inhibiting steel materials, such as the screw or cylinder of an extruder or molding machine, from corroding or wearing. The flame-retardant polyamide composition in a preferred embodiment comprises 20-60 mass % polyamide resin (A), 5-40 mass % thermoplastic resin (B) other than (A), 3-15 mass % flame retardant (C) having no halogen radicals in the molecule, and 0-50 mass % reinforcement (D), wherein the thermoplastic resin (B) satisfies the UL94V-0 standards, the flame retardant (C) is a phosphinic acid salt compound, and the sum of the thermoplastic resin (B) and the flame retardant (C) is 16-45 mass %.