Blepharitis is also known as “rotten eyes”. It is a condition that affects people who work hard, have low body resistance, and are exposed to dust for long periods of time. Experts say that blepharitis is a clinical condition that can be very harmful to the patient’s eyes, but because there are many causes, patients need to know exactly how to identify it when diagnosing it in order to avoid misdiagnosis. Diagnosis: The onset of the disease is located at the lid margin, in the organ belongs to the spleen, and is mostly a hot evidence of actuality. The evidence is that ulceration of the lid chord and sticky mucus and tears are dampness; redness and pain of the lid chord are heat, and itching is wind. The lesion is located in the canthus and is caused by the wind and the fire of the heart, so the wind-damp-heat triad is the main cause. The general principle of treatment is to dispel wind, clear heat and remove dampness. Red and red ulcerated lid strings, burning and itching, long duration of disease, easy recurrence. The lids are red and red and ulcerated, burning and itching, with a long duration and easy recurrence. Local flushing and discharge. Localized flushing and secretion. If the eyelashes have bran-like white flakes attached to the roots, the lid strings are flushed and dry, and the eyelashes are rubbed frequently, it is a scaly rotten edge; if the eyelashes are ulcerated and bleeding at the roots, with yellow scabs accumulating, shyness and tears, mucus and tears sticky, painful and itchy, and the eyelashes are disorganized or falling off, it is an ulcerated rotten edge; if the lesions are located at the lid margins of the two canthi, the canthi are red and red, the lid margins are rotten, and it is hot and itchy, it is a canthal rotten edge. Differential diagnosis: This disease must be differentiated from wind and red sores. Both have red and red ulcers on the lid, with burning and itching, but the onset of the disease is confined to the lid chord, whereas the latter involves the skin of the lid and does not affect the lid chord. In the latter case, the skin of the lid is involved and does not affect the lid chord. The main manifestations of the disease are wetness, redness, and tingling of the lid chord, especially in the presence of wind.