Abstract: Objective Based on potential profile analysis，to understand the category characteristics of post- traumatic growth level of young and middle-aged accidental trauma patients，and to explore the influencing factors of different categories of post-traumatic growth level in accidental trauma patients. Methods Through a cross- sectional study，225 young and middle-aged accidental trauma patients in the Department of Trauma Surgery of a tertiary hospital in Qingdao City from October 2022 to March 2023 were selected by convenience sampling method. A general information questionnaire and the simplified Chinese version of the Posttraumatic Growth Rating Scale were used for survey. Results The results of potential profile analysis showed that the posttraumatic growth characteristics of young and middle-aged accidental trauma patients could be categorized into four potential categories：low-growth group （1.8%），medium-growth group （62.3%），medium-growth-high-relationship group （32.6%）， and high-growth group （3.4%）. The results of the multiple logistic regression analysis showed that age，per capitamonthly family income，payment method，and type of trauma were the influencing factors of posttraumatic growth in young and middle-aged accidental trauma patients （P<0.05）. Conclusion There is obvious heterogeneity in the level of post-traumatic growth of young and middle-aged accidental trauma patients，and it is recommended that healthcare professionals carry out interventions such as psychological counseling and appropriate information support according to the characteristics of different post-traumatic growth categories in patients in order to improve the level of post-traumatic growth of patients.

Key words: Adult； Wounds and Injuries； Posttraumatic Growth, Psychological； Latent Profile Analysis； Factors Analysis, Statistical