The invention relates to an antiskid control method for an aircraft brake and an aircraft brake system. An active control concept is adopted, and through combination of aircraft speeds during braking, and through consideration of the influence of lifting force for the high-speed aircraft, actual brake pressure is gradually increased along with the decelerating of the aircraft, dangers that at the beginning of brake, ground attachment coefficients are small, so that the aircraft skids, and even tyres can be exploded due to brake are avoided; besides, requirements for braking skills of a pilot are further reduced, overcoming of human factors is facilitated, and using safety of the aircraft at high speed is guaranteed; the braking pressure is gradually enlarged along with the decelerating of the aircraft, so that potential accident hazards existing in brake of the aircraft at high speed are solved, but also the operating frequency of antiskid control is reduced, and the braking efficiency is improved. The antiskid control method of the aircraft brake and the aircraft brake system disclosed by the invention are suitable for development of a new aircraft, and are suitable for refitting of active service aircraft types.