Objective To investigate the life space constriction of the self-care older adults in communities and analyze its influencing factors, in order to provide references for targeted interventions.Methods A convenient sampling method was employed to select 268 self-care older adults in communities of Hefei city as the research subjects. Data were collected using the general information questionnaire, Life Space Assessment Scale (LSA), Mini-Mental State Examination (MMSE), and Chinese version of Eysenck Personality Questionnaire (EPQ-RSC). Results The prevalence of life space constriction was 42.2%. Age, gender, marital status, education level, personality type, the use of assistive tools, and cognitive function were identified as influencing factors for life space constriction with self-care older adults in communities (all P<0.05). Conclusion The prevalence of life space constriction is relatively high among self-care older adults in communities. Medical staff should strengthen early screening and identification of life space constriction in this population. Targeted interventions should be implemented to improve the life space conditions of self-care older adults in communities, enhance their sense of well-being in later life, and promote healthy aging.