【Abstract】 Objective To analyze the situation about children with respiratory tract infection with influenza virus in Beijing Civil Aviation General Hospital. Methods 1050 children with lower respiratory infection with influenza virus were included in the present study. The pharyngeal secretions of the children were collected and detected with reverse transcription polymerase chain reaction (RTPCR). The annual distribution of the influenza virus, the type of children of different age influenza virus and seasonal flu viruses were analyzed. Results The annual positive rate of IFA and IFB were higher than that of IFC. The annual positive rate of IFA and IFB were highest in 2015 (652% and 385%). The annual positive rate of IFC was highest in 2011 (104%). There were 618, 345 and 87 cases with IFA, IFB and IFC. The positive rate of IFA (589%) was higher than that of IFB (246%) and IFC (23%) (P＜005). The rate of IFA and IFB at 1~3 year children was highest among all age groups (P＜005). IFV was obviously seasonal. IFV positive rate was significantly increased in the spring and winter. Conclusion The positive rate of IFA and IFB is higher than that of IFC. The peak of IFV outbreak is in the spring.