Introduction: Considering the high prevalence of diabetes is world wides, self-care programs in diabetic patients are important. There are many studies about self-care programs and assess the outcome of these programs. But the quality of methodology and reporting of these investigations in Iran for use in evidence-based practice has not been extensively studied. This study aimed to determine the quality of the methodological reports of randomized controlled trials on self-care programs in diabetic patients, published in Iranian journals. Materials and Methods: In this Secondary study randomized controlled trial articles in Persian and English-language related to diabetes and self-care education, published at local journals magazines in Magiran, SID, Iranmedex, Irandoc databases and Google Scholar and Scopus from 2010 up to June 2016 were searched and assessed using the Jadad scale. Results: Results showed 29 articles based on Jadad 5 and 13 points had average scores of 2±0.92 and 8.65±1.11 respectively. Randomized allocation in 89.65 % of the studies was noted. Only 3 cases (6.89 %) of the studies were blinded and 13 studies (44.82 %) were reported withdrawal and its causes. Conclusion: Results of this study showed poor quality of methodological reporting, i.e. (average score below 9). Weaknesses observed in the reporting of trials, required more accurate guidelines and clinical trial assessment tools for authors and scientific journals reviewers.