ObjectiveFor emerging adults with inflammatory bowel disease, future uncertainty is a critical issue during this pivotal stage of life, study and career development, as they encounter many unknown challenges and opportunities. However, to the best of our knowledge, only a few qualitative studies on how emerging adults with inflammatory bowel disease cope with these uncertainties exist. This study aimed to investigate uncertainties associated with the future of emerging adults with inflammatory bowel disease and explore coping strategies.DesignA qualitative semistructured interview study with a phenomenological approach. Face-to-face semistructured interviews were conducted, audio-recorded, transcribed verbatim and subsequently analysed using the Colaizzi seven-step analysis method.SettingA tertiary hospital in eastern China.ParticipantsParticipants (n=14) were emerging adults with inflammatory bowel disease recruited from a tertiary hospital in eastern China, using a purposeful sampling technique.ResultsFourteen patients completed the interviews. Four themes were identified: uncertainties in educational and vocational planning, social and interpersonal relationships, mental and emotional health and disease management. Moreover, the participants emphasised the significance of timely patient education postdiagnosis and ensuring consistent medical guidance after discharge to minimise uncertainty and alleviate confusion. They also hoped to manage the disease through traditional Chinese medicine.ConclusionsThis study provides valuable insights into the various challenges encountered by emerging adults with inflammatory bowel disease and the factors that may impact their experiences. Additionally, it suggests the need for healthcare providers to devise suitable support and intervention strategies to guide and establish stable management of the patients’ uncertain futures.Trial registration numberChiCTR2300071289.