The invention provides a method, a device, and equipment for correcting the gyroscope data of a mobile robot. The method comprises following steps: subjecting laser radar data of a current frame to loop closure detection; if the loop closure detection is successful, adopting an iterative closets point (ICP) algorithm, according to the primary estimated potion of Y key frames of a mobile robot, thelaser radar point set of Y key frames, the primary estimated angle of Y key frames, and the laser radar point set of the current frame of the mobile robot, determining the information of Y candidateestimated poses; according to the laser radar point set of each key frame and the laser radar point set of the current frame, determining the quantized value of each candidate estimated pose of the current frame; and based on the information of the candidate estimated pose corresponding to maximal quantized value of Y quantized values, correcting the gyroscope data of the mobile robot. The methodcan correct the gyroscope data more quickly and more accurately and improve the work robustness of the system.