Objective : The purpose of this study was to effects of the Participation in physical group occupational therapy on cognitive function, neuropsychiatric, social behavior in elderly with wandering dementia. Methods : Thirteen elderly with wandering dementia who live in nursing home in this study. Assessment tools were made by using Cognitive function scale(CFS), Algase Wandering Scale-V2(AWS-2), Neuropsychiatric Inventory-Questionaire(NPI-Q), social-behavioral function measure(SBFM). physical group occupational therapy performed for forty minute, once a week for 9weeks. the assessment tools were made twice: before, after the intervention. Results : Significant differences between pre-treatment and post-treatment were found in the AWS(p<0.05) score and SBFM(p<0.05) score, NPI-Q behabioral and psychological level(p<0.05) score. The cognitive function and neuropsychiatric number showed improvement. but score was not significantly(p>0.05) difference after physical group occupational therapy Conclusion : The findings suggest that the physical group occupational therapy used in this study may be helpful and effectiveness in elderly with wandering dementia, further studies with more subjects and longer treatment period, including will be performed to justify these findings.