| Sumario: | • Explore Internet-based (e.g., online courses, remote support) interventions that align with digital healthcare trends and are particularly suited to home care scenarios. • Exploring the Effectiveness of an Internet Intervention on the Most Common Outcome Indicators for Informal Caregivers. • Visualize the distribution of existing studies (e.g., intervention types, outcome indicators) through the EGM to visualize "existing studies" and "research gaps." Currently, the global burden of dementia is heavy, Informal caregivers form the core force of the patient care system. Recent studies have shown that internet-based interventions demonstrate good application potential in informal caregivers. This aimed of the paper is to addressing evidence gaps of internet-based interventions for informal caregivers of dementia patients, clarify the existing intervention types and their core evaluation indicators, and provide an evidence-based basis for future research directions and policy formulation. 27 reviews included a total of 430 studies. The intervention methods included computer intervention (269,62.6%), telephone intervention (98,22.8%), mixed intervention (57,13.2%), and digital multimedia discs (6,1.4%); in addition, the intervention contents included multi-component intervention (209,48.6%), social support (14,3.3%), education (136,31.6%), and psychotherapy (71,16.5%). internet-based interventions can effectively alleviate the psychological stress and enhance the skills of caregivers and are worthy of further promotion. PROSPERO CRD42021241559; RecordID=241,559
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