The invention relates to an air sac shoes. The air sac shoes is composed of a shoe body, a shoes bottom, a shoe bottom cover, an air sac, a gas pipe, a gas generator, an ignition switch and an ignition switch cover; wherein the cavity of the shoe bottom is fixed with the air sac and the gas generator, the air sac and the gas generator are connected by the gas pipe with unidirectional ventilation function; the ignition switch is arranged at the heel of the shoe body, the ignition end of the ignition switch is arranged in the interior of the gas generator, and the other end is connected with theheel of the shoe body. The shoe bottom is provided with the shoe bottom cover, and the shoe bottom cover is arranged at the middle part of the shoe bottom. The air sac shoes opens the air sac by utilizing the principle that nitrogen is produced when Na3N and KNO3 burn, obvious buffering protection effect is realized when a person jumps down at certain height, operation is convenient, safe and reliable.