Objective: To investigate the efficacy of a self-designed restraint for children undergoing alveolar lavage for lobar pneumonia with fiberoptic bronchoscopy. Methods: A total of 196 children who received alveolar lavage from January to June 2019 were selected as the control group, and 181 children who received alveolar lavage from July to December 2019 were selected as the observation group. The special restraint was used in the observation group for children undergoing fiberoptic bronchoscopy, while the control group used the traditional restriction band. The heart rate, oxygen saturation of the two groups of children before alveolar lavage were collected, and the changes of heart rate and oxygen saturation during alveolar lavage were compared. The time-consuming and labor cost of two groups of children undergoing alveolar lavage were compared. Results: There were no statistically significant differences in heart rate and oxygen saturation between the observation group and the control group before and during alveolar lavage( P＞0.05). There were statistically significant differences in heart rate and oxygen saturation of the control group before and during alveolar lavage ( P<0.01). There were significant differences in heart rate and oxygen saturation between the two groups during alveolar lavage, and there were statistically significant differences between the two groups in time consuming and labor cost during alveolar lavage( P<0.01). Conclusion: The specialized restraint for children undergoing alveolar lavage for lobar pneumonia with fiberoptic bronchoscopy can stabilize the heart rate and oxygen saturation of children, effectively shorten the time of alveolar lavage, and decrease the labor cost of restraint.