A small red blood spot in the eye is usually diagnosed as a subconjunctival hemorrhage, which is caused by a rupture of a small blood vessel in the conjunctiva causing bleeding to collect under the conjunctiva. Subconjunctival hemorrhage varies in shape and size, often in the form of flakes or clumps, or a small amount of bleeding to form a small red spot, the disease is relatively mild can be self-healing. Cold compresses are recommended within 48 hours of the onset of hemorrhage to reduce the amount of bleeding, and hot compresses can be used to speed up the absorption of the blood after 3 days. Simple subconjunctival hemorrhage does not need treatment. In rare cases, it is considered to be related to systemic diseases, such as hypertension, arteriosclerosis, etc. If repeated subconjunctival hemorrhage occurs, it is recommended to do blood test in hematology department to see if there are other systemic diseases. It is recommended to keep enough sleep, do not watch TV and play with cell phone for a long time, keep eye hygiene, do not rub the eyes with unclean hands, and eat more green vegetables.