Abstract: Objective:To explore therapeutic effect of mechanical expectoration in the treatment of infantile pneumonia.
Methods:From March 2015 to December 2015, 134 hospitalized children with infantile pneumonia were hospitalized in our hospital, and they were randomly divided into experimental group and control group, 66 cases in the experimental group, 68 cases in the control group. Two groups of patients were given the conventional anti-inflammatory and symptomatic treatment, and the experimental group also received mechanical expectoration treatment, while the control groups were knocked on the back to produce sputum. After 5 days of treatment, observe the treatment effect, time of symptoms to disappear and the hospital stay in the two groups.
Results：The cough, lung rales disappearance time and the average hospitalization days of the experimental group were significantly less than the control group, and the total effective rate is significantly higher in the experiment group(94.0%,62/66) than in the control group(79.4%,54/68), the difference being statistically significant（P<0.05）.During the treatment, there was no adverse reaction in the experimental group.
Conclusion：On the basis of conventional treatment such as anti-inflammation and atomization for infantile pneumonia, mechanical auxiliary expectoration treatment should be given in time when body temperature is steady, which can shorten the recovery time and hospital stay obviously. It is safe and effective.

Key words: Pneumonia, Mechanical expectoration, Children