Patients with bronchial asthma can certainly drink water, as water is the most basic substance for maintaining cellular metabolism and functional activities in the human body, also known as the source of life. Therefore, regardless of the disease, even in severe cases like heart failure or kidney failure, water intake is essential, though the amount must be controlled. At the same time, diuretic treatment or urination therapy should be administered. Bronchial asthma also needs to be considered based on its state. During the acute attack phase, due to significant dehydration in the respiratory tract, small mucus plugs can form. It is generally recommended that patients hydrate more during an asthma attack because the respiratory tract loses too much water. However, in the terminal stage of bronchial asthma, if complicated by cor pulmonale, the patient may experience edema. At this time, drinking water should be more cautious because excessive fluid intake can exacerbate heart failure. Of course, the amount of water depends greatly on the stage of the patient's condition.