The bloodshot eyes after waking up in the morning are considered to be related to bad habits, allergic reactions, acute keratitis, acute conjunctivitis and other reasons. 1. Bad habits: If you have excessive late night, watching electronic products for too long and other bad habits, can cause the eyes in the morning after waking up symptoms of eye congestion. 2. Allergic reaction: If you come into contact with some kind of allergic substances, such as bed dust mites, dander and other irritating items, it can cause the symptoms of congestion and increased secretion in the eyes. 3. Acute keratitis: acute keratitis caused by bacteria, viruses, trauma, etc., can cause corneal peripheral congestion and neovascularization, so the eyes will be congested after waking up in the morning, often accompanied by tearing, increased secretion, blurred vision and other symptoms. 4. Acute conjunctivitis: due to bacterial or viral infection, sand or chemical stimulation, etc. caused by the conjunctival surface vasodilatation, and the blood volume increases, the eyes after waking up after the congestion of symptoms. When you wake up early and find that your eyes are congested, not relieved after resting, and accompanied by other discomforts, you need to go to the hospital in time to check the specific causes and treat them, so as to avoid delaying your condition.