Blood clots inside the eyes, in the exclusion of ocular trauma, the clinical diagnosis is usually subconjunctival hemorrhage. This disease is mostly caused by hypertension, hyperlipidemia, diabetes mellitus, unstable blood pressure, etc. It usually does not affect vision, but it also reflects to a certain extent that the cardiovascular and cerebral vascular problems of the whole body may exist. Therefore, when subconjunctival hemorrhage occurs, it is recommended to go to the cardiovascular and cerebrovascular department to check the cardiovascular and cerebrovascular conditions and exclude related diseases. In the early stage of subconjunctival hemorrhage, it is necessary to apply local cold compresses, using cold towels on the eyes, three times a day, 10 minutes each time. On the fourth day of hemorrhage, local hot compresses should be applied to the eyes with a hot towel at about 42 degrees for 10 minutes three times a day. At the same time, the eye should use antibiotic eye drops, local anti-inflammatory symptomatic treatment.