Expectorant sputum may be related to bad lifestyle habits, or it may be an adverse symptom caused by acute upper respiratory tract infection, chronic airway diseases, etc. It is recommended to go to the hospital for relevant examinations. 1. Bad lifestyle habits: Long-term smoking may cause excessive spitting. Harmful substances contained in tobacco can cause an increase in phlegm and may also lead to coughing. Regular alcoholism may also cause phlegm, and excessive alcohol consumption can cause damage to the body. 2. Acute upper respiratory tract infections: Acute upper respiratory tract infections can also lead to sputum, coughing, chest tightness, etc. Patients are usually accompanied by nasal congestion, runny nose, sore throat and other undesirable symptoms, there will be fever, but also caused by limb weakness, dizziness, headache and other discomforts. 3. Chronic airway diseases: ① bronchial dilatation: with such diseases will lead to sputum, usually accompanied by coughing, dyspnea and other symptoms, severe respiratory failure. ② chronic bronchitis, chronic obstructive pulmonary disease: will cause spitting, shortness of breath, chest tightness and other adverse symptoms, will lead to poor breathing, coughing and coughing will continue to recur. Spitting more sputum may also be other reasons, such as lung tumors, tuberculosis, etc., to rule out bad habits need to consult a doctor in a timely manner for relevant examinations to identify the cause of the disease, under the guidance of the doctor’s advice to choose the appropriate treatment to avoid further development of the condition.