The objective of this study was to assess whether the long-term use of oral An'Ningpai Enteric Soft Capsuleson (300 mg, three times daily, 12 months) might reduce the incidence of exacerbations and improve the quality of life in patients with Non-CF bronchiectasis.

Mucus hypersecretion plays an essential role in bronchiectasis. It has been deduced that reducing the production of mucus or improving the clearance of sputum in the airway is the key to break down this "vicious cycle" and enhance the therapeutic efficacy for bronchiectasis.

The investgators aimed to assess whether the long-term use of oral An'Ningpai Enteric Soft Capsules (300 mg, three times daily) might reduce the rate of exacerbations and improve the quality of life in patients with bronchiectasis.

Inclusion Criteria:

1) subjects older than 18 ; 2)a diagnosis of bronchiectasis was according to the 2010 British Thoracic Society guidelines; 3) with hypersecretion ：high viscous sputum symptoms (sputum traits score 2-3 points) ;4) patients had least two exacerbations in the past year and were in a state for at least 4 weeks prior to randomization

Exclusion Criteria:

1) cystic fibrosis or other etiologies (such as immunodeficiency, allergic bronchopulmonary aspergillosis, traction bronchiectasis caused by emphysema, advanced pulmonary fibrosis, etc.); 2)primary diagnosis of COPD or asthma; 3)a history of severe cardiovascular disease; 4)comorbidity with liver disease, kidney disease, malignant tumor, gastric ulcer, or intestinal malabsorption; 5)a known allergy to Eucalyptol , Limonene and Pinene Enteric Soft Capsules; 6)pregnancy or lactation (for women);7)a history of prior macrolide use of more than 1 week; 8)and poor compliance