Dark circles under the eyes of children need to be examined according to the causes, physiological ones do not need to be examined, while pathological ones need to be examined for allergens, blood tests and physical examination. 1. Physiological dark circles under the eyes: children may have dark circles under the eyes due to staying up late at night, etc. In this case, there is no need for examination, and the dark circles can be cured by paying attention to rest. 2. Pathological dark circles: allergen test, blood test, physical examination, etc. can be considered. (1) Allergen examination: children’s dark circles may be allergic to contact dermatitis caused by local inflammation caused by hyperpigmentation, patients need to do skin prick test, skin patch test to clarify the allergens. (2) Blood test: Children with dark circles under the eyes also need to undergo routine blood tests, blood biochemistry tests, determination of erythrocyte sedimentation rate and other tests. This is of diagnostic significance in determining whether anemia, infection, abnormal liver and kidney function, and diabetes have occurred. (3) Physical examination: children with dark circles need to be taken to check the color, type, and depth of the dark circles, as well as whether they are combined with drooping eyelids, bags under the eyes, tear troughs and other manifestations. It is recommended that children with dark circles should be allowed to ensure adequate rest and avoid staying up late for a long time. If children have dark circles under the eyes for a long time, they need to consult a doctor, who will choose the appropriate measures to treat them according to their condition. In addition, usually need to pay attention to sunscreen when going out, you can apply sunscreen or wear a sun hat.