Objective To study the therapeutic efficacy of open-air fitness dancing with established training motions on cognitive dysfunction in patients with mild to moderate Parkinson's disease.Methods A total of 80 patients with mild to moderate Parkinson's disease were enrolled and randomly divided into treatment group and control group, with 40 cases in each group. Patients in both groups received conventional treatment and were provided with a one-hour non-athletics related health education course every half month. Patients in the treatment group learned prescribed motions and exercised at the specified time, while patients in the control group were closely observed for changes in their conditions. The cognitive conditions of both groups were scored before and after intervention using the Mini-Mental State Examination (MMSE) and Montreal Cognitive Assessment (MoCA) scales.Results The treatment group had significantly increased MoCA score (23.23±2.17 vs 19.93±2.97) and MMSE score (23.25±2.34 vs 19.95±3.19) after six-month intervention (P<0.05). Meanwhile, the treatment group had significantly higher MoCA and MMSE scores than the control group (P<0.05).Conclusions Open-air fitness dancing with established motions is effective in improving the cognitive dysfunction in patients with Parkinson's disease.