There are many reasons why little dolls have swollen eyes, such as physiological factors, allergic reactions, eye inflammation and so on. 1. Physiological factors: small dolls drink too much water before going to bed, lack of sleep, overuse of the eyes, crying for a long time, etc., may appear in the phenomenon of swollen eyes, not accompanied by other discomforts, can be gradually relieved after sufficient rest. 2. Allergic reaction: small dolls belonging to the allergic body, easy in contact with dust mites, pollen, mold and other allergens, eye allergic reaction, which in turn caused the phenomenon of swollen eyes. 3. eye inflammation: the more common is blepharitis, is caused by bacterial infection, can show eye swelling, pain and other phenomena. There are many other causes of eye swelling, if accompanied by eye pain, itching and other phenomena, it is recommended to consult a doctor in time to deal with, not to private treatment, to take it lightly.