Objective:To systematically review qualitative studies on early activity experience in ICU patients.Methods:PubMed, Web of Science, Cochrane Library, Embase, Elsevier, OVID, CINAHL, CNKI, VIP, Wanfang Database and China Biomedical Literature Database were searched by computer for qualitative researches on early activity experience of ICU patients. The retrieval time was from the establishment of the database to December 31, 2021. The quality of the literature was assessed using the Australian Joanna Briggs Institute (JBI) Evidence-Based Health Care Center Qualitative Research Quality Assessment Standard, and the results were integrated using the Meta integration method.Results:A total of 8 literatures were included, 37 results were extracted, grouped into 9 new categories, and integrated into 3 integrated results, which were the perception and benefit of early activity necessity, hindrance factors for early activity and desire for support system.Conclusions:Early activity plays an important role in the rehabilitation process of ICU patients, but patients currently face many obstacles in carrying out early activity. Medical staff should build an early activity pscheme for ICU patients with patient safety as the core based on clinical practice, provide effective social support for patients and improve their prognosis.