Objective To explore the relationship of recurrence rate and the age and body temperature of fitrst febrile seizures (FS) in children.Methods One hundred and ninety-two cases of FS admitted to our hospital from Jan 2004 to Jun 2006,were divided into three groups according to the initial onset of body temperature with FS:＞40.0 ℃,～40.0 ℃,≤38.5 ℃ ;three groups according to the duration between fever initiation and seizure attack:≤6 h,～ 12 h,～24 h,＞24 h;four groups according to age:≤6 months,～ 18 months,～ 3 years,＞ 3 years.For each group of children with FS,the recurrence rate and follow-up were compared.Results All cases were followed up to 6 years old,22 cases were lost,and the follow-up rate was 88.5％ (170/192).Follow-up of 170 children with FS,the recurrence rate was 32.6％ (15/46),51.1％ (46/90) and 79.4 ％ (27/34) in each group of temperature ＞ 40.0 ℃,～ 40.0 ℃,and ≤ 38.5 ℃.There were statistically significant among three groups (x2 =17.18,P ＜ 0.05).Duration of fever before seizures ≤ 6 h group,～24 h group,＞ 24 h group,the recurrence rate were 70.7 ％ (29/41),51.6％ (49/95) and 29.4％ (10/34) respectively,the recurrence rate was significant difference among the three groups(x2 =12.71,P ＜0.05).The recurrence rate of different age groups in initial attack of FS were 84.6％ (22/26),63.4％ (45/71),39.5％ (15/38),17.I％ (6/35),the differences were statistically significant (x2 =34.17,P ＜ 0.05).Conclusion There was higher recurrence rate of febrile seizure in small children,lower body temperature and shorter duration between fever initiation and seizure attack.