Causes of a bloody taste in the mouth include bleeding gums, dry and cracked lips, and nasal diseases. 1. Bleeding gums: such as gingivitis and periodontal disease, the occurrence of these diseases is closely related to the stimulation of tartar. If you don’t pay attention to oral hygiene, food debris will remain on the surface of the teeth, and plaque and tartar will slowly form. As the amount of tartar increases, the risk of gingivitis and periodontal disease will also increase, leading to bleeding gums. 2. Dry and cracked lips: If the climate is relatively dry or the usual amount of water is too little, the body will lose a lot of water and the lips will be easily dried and cracked, and in severe cases, they will bleed and the blood will flow into the mouth, resulting in a bloody odor in the mouth. 3. Nasal diseases: some nasal diseases can also make the patient’s mouth smell like blood. Common is chronic sinusitis, especially fungal sinusitis, sinusitis will lead to a lot of purulent nasal discharge back into the throat, irritation of the throat, will feel the throat and the mouth with a bloody odor. There are many other reasons for a bloody taste in the mouth, and some blood system disorders can also lead to this phenomenon, so it is recommended to observe first, or go to the hospital for further examination.