With the continuous improvement of people's material standard of living, the demand for health is increasingly high. The following problem is that medical technology requirements are becoming increasingly sophistica. High medical requirements are inseparable from various sophisticated medical equipment to assist. Laser technology are widely used medical industry such as : such as eye surgery, laser diagnosis ,laser detection,laser treatment,ect.For the medical equipments , in small precision medical equipment, lasers are widely used for spot welding, seam welding and sealing. Parts or local parts with a size below 1mm can be welded. Microsoldering techniques are commonly used in products such as pacemakers, surgical blades, endoscopic devices, and batteries.