The invention discloses a forklift bucket teeth falling-off early warning device and method. A three-dimensional laser sensor and a GPS position sensor are combined. The position of a bucket is obtained through the position sensor in real time. Whether the bucket is in a preset range is judged, and image information of the bucket is subjected to image scanning through the three-dimensional laser scanning sensor only when the bucket is in the preset range. Laser point cloud information is obtained so as to compare the image information of the bucket with prestored image information. An alarm signal is given out when the situation of bucket teeth missing occurs. By adoption of the forklift bucket teeth falling-off early warning device and method, the bucket is monitored in real time, and an alarm effect is achieved when bucket teeth fall off; and laser scanning is controlled, long-time continuous scanning is avoided, the service life of equipment is prolonged, collection of invalid information is avoided, and the efficiency of point cloud processing is further improved.