Objective To investigate the intervention effect of group psychological training for cadets on individual wellbeing literacy, cognitive reassessment, mental toughness, and subjective well-being based on wellbeing literacy theory. Methods A total of 116 undergraduate cadets were subjected from a military university with whole-group sampling, and according to their mock platoons of cadet corps, they were divided into experimental group (n=58, 7 times of group psychological training, for 90~100 min each time, twice a week) and control group (n=58, no such training). Wellbeing Literacy 6 item scale (Well-Lit 6), General Well-being Schedule (GWBS), Cognitive Rating Scale of the Chinese version of the Emotion Regulation Questionnaire (ERQ), and Connor-Davidson resilience scale (CD-RISC-10) were used to assess the 2 groups of participants before (T1), immediately after (T2), and 1 month after (T3) the training, respectively. Results There were no statistical differences in demographic information and each psychologi