Objective To explore the psychosocial trajectory in parents of adolescents with first-episode mental disorders, and to provide references for targeted intervention. Methods Forty-three parents of 42 adolescents with first-episode mental disorders were investigated by utilizing a general data questionnaire, the Coping Styles Questionnaire, and the Symptom Checklist-90 (SCL-90) within 2 weeks of their child′s diagnosis. At 6 and 12 months postdiagnosis, they were assessed with the SCL-90 again.Semi-structured interviews were also conducted at the above mentioned three timepoints, and their psychosocial trajectories were summarized. Results The total SCL-90 score showed a decline over time, and the difference was statistically significant （P＜0.05）. Based on the coping score, parents were divided into an avoidance and self-blame group （n=22） and a non-avoidance and non-self-blame group （n=21）.The total SCL-90 score at 6 months postdiagnosis had significant difference and a distinct time effect was also observed between the two groups （both P＜0.05）.Three psychosocial trajectories were identified through the interview data:resilience, recovery, and distress. Conclusion Three psychosocial trajectories are observed in parents of adolescents with first-episode mental disorders. Mental health recovery can be found in most parents when their child′s illness is getting better, but a minority of parents still suffer from psychological distress.Medical staff should implement targeted interventions for parents to improve their mental health.