This study intends to conduct a prospective, double-blind, randomized, controlled trial. Adolescents aged 12-17 years old and American Society of Anesthesiologists (ASA) physical status I and II are selected as subjects. Oral probiotics is used as intervention before surgery, vital signs data, serum IL-1, IL-6, BDNF,5-HT and other inflammatory indicators are collected before surgery and after non-cardiac and non-gastrointestinal surgeries, and the incidence and degree of anxiety and depression are evaluated after non-cardiac and non-gastrointestinal surgeries. To determine the effect of esketamine on reducing anxiety and depression in adolescents after non-cardiac and non-gastrointestinal surgeries, and to provide an effective clinical basis for accelerating the rehabilitation of adolescents after non-cardiac and non-gastrointestinal surgeries.