[abstract]objective:toobservethemoreinthetreatmentoftheophyllineinfantsoncapillarybronchitisandtheclinicalcurativeeffectofadversereactions.Methods:thecapillarybronchitisestroublewere102caseswererandomlydividedintotwogroups:treatmentgroupinaroutinetherapycombinedwithmanycabletheophylline,comparedtotwogroupsincough,wheezeturnaroundtimeandlungsignsbacktonormalandthelengthofthehospitalstay,andobservethetreatmentgroupintheprocessofinfusionwhethervomit,tachycardiaandirritableandotheradversereaction.Results:treatmentgroupincough,wheezeturnaroundtimeandlungsignsarelessthannormaltimecontrolgroup,adversereactionratelow,nocannottoleratecases.Conclusion:manycabletheophyllinetreatmentcapillarybronchitisissafeandeffective.