When blood crusts appear in the ear canal, the first thing to identify is whether the blood secretion is really a dry crust, or sometimes it may be brown or tan cerumen forming a crust that is mistaken for a blood crust. If there is no obvious pain and there is no history of previous trauma such as digging in the ear or water in the ear, it can be treated without special treatment and can be left to fall off on its own. If the scab is obvious and is accompanied by active bleeding, the first step is to stop the bleeding by using a small cotton ball dipped in epinephrine and applying local pressure to stop the bleeding. After 3-4 days, the blood crust is completely coagulated and detached from the skin, and can be gently removed with the help of a doctor under endoscopy. At the same time, it is important not to neglect the formation of blood crusts in the external ear canal caused by tympanic membrane rupture and inflammation. After clearing the blood crust from the external ear canal, the tympanic membrane can be further examined with a fiberoptic hosepiece.