Eye congestion refers to the expansion of blood vessels in the bulbar conjunctiva and sclera tissue congestion, bruising or bleeding, the causes of this phenomenon include eye fatigue, eye inflammation, allergies, eye trauma and so on. 1. Eye fatigue: prolonged exposure to electronic screens or staying up late can easily lead to eye fatigue, causing eye swelling and congestion, etc. In daily life, attention should be paid to proper rest, and hot towels can be used to promote local blood circulation. 2. Eye inflammation: the eyes are susceptible to bacterial, fungal infections such as the emergence of a variety of inflammation. For example, the common conjunctivitis, iridocyclitis or keratitis, these problems are easy to cause eye congestion phenomenon. So in normal life, must pay attention to good eye hygiene, avoid eye inflammation. 3. Allergy: allergy is also easy to cause eye congestion, causing allergy allergens are many, such as common dust in the air or a variety of pollen, willow, etc. into the eyes, may lead to eye congestion, tearing or itchy eyes phenomenon, this situation needs to be cut off in time to improve the allergens. 4. Eye trauma: Trauma is more likely to cause eye congestion, such as impact or chemical injury, may lead to eyeball congestion. Generally caused by trauma eye congestion should pay attention to observe the changes in the eye, if it is not very serious, it does not need special treatment, while more serious cases need to go to the eye hospital in time to find a professional doctor to deal with. It is recommended to go to the hospital to clarify the cause of the disease, for the cause of the treatment.