Although previous studies indicated that tackling hearing loss may have a secondary benefit in improving cognitive function and delaying the onset of dementia, a more integrated care approach to optimize both hearing and cognitive function may be needed for individuals who already developed cognitive decline. To address the dual care needs for PwMCI and hearing impairment, it may be possible to integrate auditory training into cognitive training, as both of them are activity-based and focus on increasing the attention and working memory of an individual to engage in the auditory communication process. Moreover, auditory instruction is one of the core mediums in delivering cognitive training activities. It is highly possible to integrate the auditory training curricular to the corresponding administration process. To tackle the enhanced support need of individuals with dual functional impairment to engage in an integrated training protocol, strategies including a goal-oriented approach and peer support can be integrated to optimize the empowerment network. Including family members in the training is also important, as the auditory-communication process in everyday life would take place in the social interactional context. This is a pilot mixed-method pilot study comprising a randomized controlled trial and a post-trail qualitative interview. A total of 62 participants will be recruited from two community centers. The inclusion criteria include mild cognitive impairment according to Petersen's criteria; with at least one-side hearing impairment as defined by a score of 2- or 3-digit test greater than the norm value on the integrated Digit-in-Noise (iDIN test); has a smartphone to access the online training materials; not received formal cognitive and auditory training in the past 6 months. After the baseline outcome evaluation, they will be randomized to receive the 12-week ENACT program or the usual care control. The nurse-led ENACT program comprises three phases, including i) the goal-oriented health counselling phase, ii) the peer-assisted group-based auditory-cognitive training phase, and iii) the family-engaged active-communication training phase. The outcome evaluation on hearing function, perceived benefit of auditory training, cognitive function, and HRQoL will be assessed at baseline, in the 12th and 18th weeks. Qualitative interviews will be conducted