Laser removal of red blood silk is actually a treatment for vascular diseases. Red blood silk should be called telangiectasia in clinic. Red blood can be on cheeks, forehead or chin, and some may be more conspicuous on the tip of nose or alar. In the process of laser treatment of red blood silk, through selective photothermal reaction, hemoglobin in red blood cells in blood vessels specifically absorbs the energy of laser with a specific wavelength, and then instantly generates heat to damage the wall of blood vessels, thus causing immediate vascular embolism. In this way, in the process of tissue healing, blood vessels are gradually blocked, then organized, hemoglobin is absorbed, and red can no longer be seen. This treatment can achieve the purpose of removing red. Actually, the process is a bit long. Although the speed of laser treatment is very fast, it can be completed in a few minutes or ten minutes, but it takes about 1 month to make it no longer red and recover to the point where there is no red blood. The effect of laser treatment of red blood silk is still very positive, and the effect is quite good, but it may not be completed once, and sometimes it may take two or even three times to achieve better results.