Purpose: Diabetic patients faced with many problems in the 
field of health promoting lifestyle and health hardiness. 
Therefore, present research was conducted with the aim of 
effectiveness of motivational interview on health promoting 
lifestyle and health hardiness in patients with type 2 diabetes.
Materials and Methods: This study was semi-experimental 
with pretest and posttest design with control group. The 
research population was type 2 diabetes patients had files in 
Diabetes Association of Zahedan city in the spring of 2021 
year. After reviewing the inclusion criteria, number of 30 
people were selected by purposive sampling method and 
randomly replaced in two equal groups. The experimental 
group was trained 8 sessions of 70 minutes with the 
motivational interview method and the control group was 
placed on a waiting list for training. The research instruments 
were the health promoting lifestyles profile II (Walker et al., 
1995) and revised health hardiness inventory (Gebhardt et al., 
2001). Data were analyzed by tests of chi-square and 
multivariate analysis of covariance in SPSS-19 software.
Findings: The findings showed that the experimental and 
control groups did not significantly different in terms of 
gender, age, education and marital status (P>0.05). Also, the 
motivational interview method in comparison with the control 
group led to increase the health promoting lifestyle and health 
hardiness in patients with type 2 diabetes (P<0.001).
Conclusion: According to results of this study, health experts 
and therapists can use from motivational interview method to 
improve health related traits especially increasing life 
expectancy, health promoting lifestyle and health hardiness.