The amount of nasal bleeding depends on the size and number of broken blood vessels; arterial bleeding is red in color, venous bleeding is medium to dark, and capillary bleeding is somewhere in between. Except for the two nostrils, not everyone knows what the nasal cavity really looks like. In fact, the nasal cavity is very large and has many fissures that are very hidden, so it is not easy to see them clearly, and it is a test for the doctor. The good thing is that nearly 90% of nasal bleeding is in the anterior part of the nasal cavity, below the anterior septum, and seeing the bleeding point is the first part of accurate treatment. Although the causes of nasal bleeding are complex, the causes may be simpler for a specific patient. For example, the bleeding point happens to be located in the anterior part of the nasal cavity and appears as a small protrusion on the mucosal surface, which can be easily missed clinically without close examination. Because it is a small arterial bleeding point, it is often peaceful during the resting phase, but bleeding during an attack is often frightening. For this type of bleeding, the emergency solution is compression or tamponade to stop the bleeding; however, the best way to stop the bleeding is electrocoagulation or cautery to completely close the bleeding point.