There is usually no blood in the sputum of gastric sinusitis, but when the bleeding is heavy, there may be vomiting of blood, that is, blood in the vomit. Gastric sinusitis is an inflammation of the mucosa that occurs in the sinus area (the junction of the stomach and duodenum) under the influence of Helicobacter pylori infection, duodenal reflux, medications or toxins. Patients mainly present with periodic abdominal pain, bloating, acid regurgitation and belching, and loss of appetite. When the inflammation is severe enough to cause bleeding in the stomach, and when the amount of bleeding is large, the patient may also have the symptom of vomiting blood, which means that there is blood mixed in the vomit. However, blood is not usually present in the sputum of patients with gastro-sinusitis. Sputum is a viscous liquid produced mainly due to inflammatory stimulation of the respiratory tract (trachea, bronchus, lungs, etc.). Therefore, blood in sputum is mainly seen in respiratory diseases, such as tracheal or lung infections, tuberculosis, lung tumors, lung abscesses, bronchiectasis, and so on. Therefore, when there is blood in the sputum, it is recommended to consult a doctor in time to identify the cause of the disease and carry out targeted treatment. Patients with gastro-sinusitis should also be actively treated according to medical advice and seek timely medical attention if there is any obvious discomfort.