BackgroundFamilies of children living with chronic illness are more vulnerable to mental health problems, however this can be ameliorated by a family’s resilience. The Child Illness and Resilience Program (CHiRP) will develop and evaluate a parent-focussed family intervention designed to increase the resilience and wellbeing of families living with childhood chronic illness.Methods/DesignThe study will be conducted in an Australian regional paediatric hospital and will use a stepped care intervention that increases in intensity according to parental distress. All parents of children discharged from the hospital will receive a family resilience and wellbeing factsheet (Step 1). Parents of children attending selected outpatient clinics will receive a family resilience and wellbeing activity booklet (Step 2). Parents who receive the booklet and report psychological distress at three-month follow-up will be randomised to participate in a family resilience information support group or waitlist control (Step 3). The Step 3 control group will provide data to compare the relative effectiveness of the booklet intervention alone versus the booklet combined with the group intervention for distressed parents. These participants will then receive the information support group intervention. All parents in Step 2 and 3 will complete baseline, post-intervention and six month follow up assessments. The primary outcomes of the study will be changes in scores between baseline and follow-up assessments on measures of constructs of family resilience, including parental wellbeing, family functioning, family beliefs and perceived social support. Qualitative feedback regarding the utility and acceptability of the different intervention components will also be collected.DiscussionIt is hypothesised that participation in the CHiRP intervention will be associated with positive changes in the key outcome measures. If effective, CHiRP will provide an opportunity for the health sector to deliver a standardised stepped care mental health promotion intervention to families living with childhood chronic illness.Trial registrationAustralian clinical Trials Registry ACTRN 12613000844741Universal Trial Number (UTN): 1111-1142-8829