Formoterol powder nebulizer generally refers to formoterol fumarate powder inhaler, budesonide powder nebulizer and formoterol fumarate powder inhaler lies in the two components, pharmacological effects, indications and so on are different. 1. Different ingredients: the main ingredient of budesonide powder inhaler is budesonide, while the main ingredient of formoterol fumarate powder inhaler is formoterol fumarate. 2. Pharmacological effects are different: budesonide powder inhaler is a glucocorticoid, its main ingredient budesonide has a strong anti-allergic and anti-inflammatory effect, can relieve rapid-onset and delayed-onset allergic reaction caused by bronchial obstruction, but also can be used to prevent exercise asthma attacks. Formoterol fumarate powder inhaler, a β2 agonist, has the effect of diastolic bronchial smooth muscle, relieving bronchial smooth muscle spasm and anti-metamorphic reaction. 3. Different indications: budesonide powder inhaler is mainly used for the treatment of bronchial asthma, while formoterol fumarate powder inhaler can be used for the treatment and prevention of reversible airway obstruction, and can also be used as an additional drug in the treatment of anti-inflammatory drugs.