Generally, dye laser may not recur a month after it has been done, and it may recur when care is not taken properly. Dye laser surgery mainly uses the principle of thermal coagulation in lasers to treat patients with skin redness caused by various reasons. The dye laser acts on the oxygenated hemoglobin in the capillaries through its light wave, so that thermal coagulation occurs to stimulate the contraction of capillaries and occlude the local superficial capillaries to achieve the purpose of treating red blood, and a month’s time has basically been cured, and the possibility of recurrence is very small. If you do not pay attention to scientific care after treatment, such as exposure to the sun after treatment, strenuous exercise, drinking alcohol, eating too much spicy and stimulating food and other factors that stimulate the expansion of blood vessels, will lead to occlusion of blood vessels reopened and lead to recurrence. After dye laser treatment, scientific nursing should be taken care of; if patients experience recurrence, they should go to the hospital in time.