Objective:To observe the specific effect of psychological intervention with behavioral induction as the core in impro-ving the mood and sleep quality of children after tonsil surgery.Methods:A total of 82 children who received tonsillectomy in Tai-ning County General Hospital from March 2022 to March 2023 were randomly divided into control group and observation group by computer,41 cases in each group.41 children who received routine postoperative care were selected as the control group,and 41 children who received behavioral induction as the core psychological intervention were selected as the observation group.The fear,sleep disorder,sleep index and sleep quality of the two groups were evaluated and compared respectively.Results:Compared with the control group,the scores of fear and sleep disorder in observation group were lower(P<0.05).The sleep index and sleep quality of observation group was better(P<0.05).Conclusion:Psychological intervention with behavioral inducement as the core can reduce clinical fear,improve sleep disorder and sleep index,improve sleep quality,and promote body recovery.