结论：痰清颗粒具有良好的止咳化痰平喘作用。
Objective: To do animal experiments of Granule Tan-qing on relieving cough and reducing sputum to relieve asthma.
实验提示急性发作期运用清热化痰，宣肺平喘药效果明显，一定要注意用药剂量要轻，勿过用寒凉。
Experimental acute attack prompted the use of diffusing the lung to resolve phlegm and clearing away heat to relieve asthma drug effect, we must pay attention to light dosage, do not have to use cold.
方法：通过镇咳实验、祛痰实验、平喘实验和抗炎实验，来筛选止咳化痰的有效部位。
Method: the effective ingredients are identified by the easing cough experiment, removing phlegm experiment, relieving asthma experiment and anti-inflammation experiment.
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