A rattle in the windpipe can be caused by bronchial asthma, chronic bronchitis or chronic obstructive pulmonary disease (COPD), pneumonia, etc. The most common is bronchial asthma. 1. The most common form of asthma is bronchial asthma, in which there is a distinctive rumbling sound during an asthma attack due to restricted airflow, which can be described as a rattle in the windpipe. 2. Chronic bronchitis or chronic obstructive pulmonary disease, especially those with a relatively long course of disease, can be poorly treated with airflow limitation, while bronchial sputum aggregation. This can lead to a similar sound when breathing, which is a typical manifestation of chronic lung disease. 3. Pneumonia, due to bacterial or viral infection, resulting in inflammation of the lungs, while secretions increase significantly. This can cause impaired ventilation of the trachea and bronchial tubes, and a similar sound is made when the air passes through. The specific cause of the disease needs to be clarified after medical examination, and at the same time, timely and active treatment according to medical advice.