Indacaterol is a long-acting β2-adrenoceptor agonist indicated for the maintenance treatment of adults with chronic obstructive pulmonary disease (COPD). Clinical trials have shown that indacaterol has clear advantages in relieving dyspnea and improving quality of life, and that COPD patients treated with indacaterol are more likely to achieve clinically meaningful improvements and Indacaterol also has a clear advantage in reducing acute drug use. In addition, indacaterol has a good safety profile and tolerability, and the results suggest thatindacaterol, as one of only two long-acting bronchodilators available to be only inhaled once daily, is significantly better to other drugs in improving symptoms in patients with COPD.