This preliminary study aim to investigate the effects of performance of Mendelsohn maneuver and volition on swallowing function and diet level in stroke patients with dysphagia. Fourteen chronic stroke patients with dysphagia participated in present study. The subjects received conventional rehabilitation. The intervention dose for Mendelsohn maneuver was 15 min/days, three times a week, for 8 weeks. The subjects performed Mendelsohn maneuver performance after the first session of treatment and after interventions for 8 weeks. The measurements for swallowing function was performed initial test and after intervention. The canadian occupational performance measure (COPM) and the volitional questionnaire (VQ) was used to evaluate the performance of Mendelsohn maneuver and the volition of rehabilitation. The modified Mann assessment of swallowing ability (MMASA), the swallowing function test (SFT), and the function outcome intake scale (FOIS) was used to assess the swallowing function and dietary level. Performance of Mendelsohn maneuver showed significant improvement after 8 weeks compared to the initial test (p<.05). The SFT, MMASA, FOIS, and VQ showed significant improvement before and after intervention (p<.05). There was no significant difference in the SFT, the MMASA and the FOIS according to the performance of Mendelsohn maneuver (p>.05). In the comparison of dietary levels by volition, the upper group was significantly higher than the lower group (p<.05). These findings suggest that the volition of stroke patients with dysphagia may have a positive effect on dietary levels.