A terminal crimping method and a crimping tool are provided, thereby suppressing the generation of friction at an anvil and a crimper and also suppressing the generation of an upthrust portion at the upper part of a wire barrel to which a conductor of a covered electrical wire is crimped. The crimping tool includes an anvil having a placement groove on which a female-type terminal is mounted, and a crimper that crimps a conductor barrel of the female-type terminal mounted on the anvil. The placement groove includes a first pressing portion that presses the effective crimping portion and a second pressing portion that presses the extension, and the bottom surface of the second pressing portion is formed as an inclined surface expanding and opening toward a receptacle side.