本文主要利用高精度、低延时、抗干扰强的激光测距技术，实现工程基础训练焊接（手工电弧焊）实训操作过程中的适时监控，并由 STM32F103 为核心处理器，通过计算处理及时实现智能语音提示，提醒学生及时对焊接方向做出调整，达到准确、适时、人性化的控制功能。使学生能够更快更好的掌握焊接操作，减轻教师教学工作量，提高学生焊接实训效果。“,”in this paper, the laser ranging technology with high precision, low delay and strong anti-interference is mainly used to realize the timely monitoring in the process of engineering basic training welding (manual arc welding). With STM32F103 as the core processor, intelligent voice prompt can be realized in time through calculation and processing to remind students to timely adjust the welding direction, so as to achieve accurate, timely and humanized Control function. So that students can master welding operation faster and better, reduce the teaching workload of teachers, and improve the welding training effect of students.