Tiotropium bromide has anticholinergic bronchodilatory effects, improves lung function, and relieves dyspnea. Side effects such as palpitations, dizziness and dry mouth are often seen. Tiotropium bromide is an anticholinergic drug with bronchodilatation, effective improvement of lung function and relief of dyspnea. It is suitable for the maintenance treatment of chronic obstructive pulmonary disease (COPD) and related dyspnea, to improve the quality of life of patients with COPD and to reduce the acute exacerbation of COPD. Side effects of tiotropium bromide commonly include dry mouth, thirst, palpitation, panic, and even a feeling of stopping, facial flushing, chest pressure, etc.; occasional dizziness, headache, tremor, euphoria, fever, drowsiness, night sweats, belching, abdominal pain, excessive stomach acid, swallowing discomfort, gingivitis, ulcerative stomatitis, and also difficulty in urination, urinary retention, and urinary tract infections, especially in elderly men. Tiotropium bromide is contraindicated in people who are allergic to tiotropium bromide, atropine and its derivatives, and should not be used in acute bronchospasm. It needs to be used rationally under the guidance of a physician.