In the automatic production line, laser cutting and welding are common processing technologies. The ceramic heat sink can effectively manage the heat of laser, ensure the stability and durability of the equipment under high-load operation, and improve the precision of cutting and welding. The laser sensor plays a key role in automatic detection. The ceramic heat sink can maintain the temperature stability of laser emitter, ensure the measurement precision in the detection process, and is applicable to dimension measurement, surface detection, etc.