The existing visual obstacle localization algorithms can't locate the obstacles moving out of sight, and there are noises in localization. For these problems, an obstacle memory localization and denoising algorithm based on binocular ORB-SLAM(simultaneous localization and mapping system based on the oriented BRIEF feature) is proposed. Based on the detection results of the obstacle, the algorithm projects the obstacle points to the ground grid through the SLAM(simultaneous localization and mapping) map fram...