[Purpose/significance] The research on the influencing factors of network public opinion dissemination behavior in UGC of mobile video clips can help us better understand the behavior characteristics and influencing factors of mobile video clips users,thus helping the network public opinion supervision department to strengthen the management of mobile video clips network public opinion.[Method/process] Based on the planned behavior theory and the information ecology,perspective of harmonious development of information,information people,information technology and information environment,this paper constructs a model on influencing factors of network public opinion dissemination behavior in UGC of mobile video clips,and uses the methods of questionnaire survey and structural equation research to statistical analysis and model validation with SPSS 22.0 and AMOS 21.0 software.[Result/conclusion] The results show that three factors,information,information environment and information technology,have a positive impact on the network public opinion dissemination behavior in UGC of mobile video clips by dissemination willingness;information factors have the greatest impact on the network public opinion dissemination behavior in UGC of mobile video clips,followed by information environment and information technology.