The nebulizer should be terbutaline sulfate, a selective short-acting beta2 agonist used to dilate bronchial tubes and relax bronchial smooth muscle, and is generally used in bronchial asthma, wheezing bronchitis, and other causes of bronchial stenosis in lung disease. Terbutaline is generally more commonly administered by inhalation, with a relatively rapid onset of action and fewer systemic adverse effects, such as during an acute asthma attack when inhalation administration is ineffective due to airway spasm and intravenous administration is preferred. Adverse reactions: A few patients have mild adverse reactions, mainly manifested as dry mouth, nasal congestion, mild chest tightness, drowsiness, palpitation and hand tremor. Contraindications: Hypersensitivity to this product and other adrenergic agonists is contraindicated. Precautions: Use with caution in patients with uncontrolled hyperthyroidism and diabetes mellitus. Do not combine with non-selective beta blockers. Use of the drug should be under medical supervision and should be started in small doses for those who are sensitive to adrenergic receptor agonists.