Blood in the throat in the early morning is considered to be caused by chronic pharyngitis, nasopharyngeal cancer and laryngeal cancer. 1. Chronic pharyngitis: this kind of patients mostly cause congestion and swelling of the mucous membrane of the pharynx, which is manifested as the expansion of the capillaries under the mucous membrane. Some patients may have irritating cough in the early morning, when coughing is more violent, it may cause damage to the mucous membrane of the throat and a small amount of bleeding, so the phenomenon of blood in the throat in the early morning can be seen. 2. Nasopharyngeal cancer: Typical manifestations of nasopharyngeal cancer patients may have blood in snot, nosebleed and other manifestations. When the amount of bleeding is relatively large, the blood may flow backward to the nasopharynx. When bleeding manifests as slow oozing of blood, there is blood in the throat in the morning, so the phenomenon of blood in the throat in the early morning can be seen. 3. Laryngeal cancer: When patients have tumor in the larynx due to smoking, drinking, air pollution, exposure to toxic substances, etc., patients often have cough, dyspnea, hoarseness, difficulty in swallowing, etc. Some patients may suffer from frequent, violent or severe coughing, hoarseness, difficulty in swallowing, etc.. Some patients may cough frequently and violently, leading to rupture and bleeding of the tumor in the throat, so the phenomenon of blood in the throat in the early morning can be seen. If there is blood in the throat, it is recommended to consult the hospital as soon as possible to find out the cause of the disease and then be actively treated, so as not to delay the treatment.