Objective: To explore the cross-lag effect of psychological capital and psychological
adaptation in armed police recruits. Methods: A total of 1050 recruits from a certain unit of the armed
police were selected by cluster sampling, and interviewed and evaluated with positive psychological
capital questionnaire (PPQ) and army recruits adaptability questionnaire. Results: (1) There was a
significant positive correlation between the pre-and post-test psychological capital and the total score of
psychological adaptation, and (2) The results of analysis of variance showed that there were significant
differences between pre-and post-test psychological capital and psychological adaptation. (3) The results
of cross lag analysis show that pre-test psychological capital can positively predict post-test psychological
adaptation, and pre-test psychological adaptation can positively predict post-test psychological capital.
Conclusion: Psychological capital and psychological adaptation of armed police recruits play a positive
role in predicting each other.