Background: Muscle wasting and limitation in physical activity have been reported in patients with hemodialysis; this leads to poor quality of life at the end. Objective: To develop the respiratory training device and to determine the efficiency of the prototype on respiratory muscle strength, functional capacity and dyspnea perception in hemodialysis patients. Design, setting and participants: the development of respiratory device was created and then effects of respiratory device were examined in hemodialysis patients. A total of 25 patients with quasi experimental study was recruited in the present study with aged ≥ 35 years old. All participants had a history of hemodialysis 3 days per week. Outcome measurements and statistical analysis: The protocol was conducted 15 inhales, three set per day with 40% of maximal inspiratory pressure; totally 45 inhales. The participants were asked to perform for three times per week during on hemodialysis. Respiratory muscle strength, the 6minute walk test and rate of dyspnea scores were assessed before and after 8-week intervention program. Paired t-tests was used to compare between initial values and follow-up values in respiratory prototype. Results: Of 25 patients at initially was enrolled, 22 individuals (88%) completed in the 8-week program. Significant improve in inspiratory muscle strength, 6minite walk distance and rate of dyspnea was observed after 8-week intervention (12.44± 3.55 cmH2O, 24.78 ± 8.89 meters, and 0.50 ± 0.19, respectively). Conclusion: Using porotype of respiratory device can effectively improve cardiorespiratory performance which is marked by increasing inspiratory muscle functional capacity and rate of dyspnea in hemodialysis patients after 8-week training program.