Purpose : The impact of the physical surroundings on the healing process and overall well-being has become particularly important for patients in recent years. This study aimed to identify the effects of environmental psychology on reducing stress and anxiety on the pediatric dialysis. Methodology : This descriptive, analytical study was conducted on 150 hemodialysis patients (50 males and 40 female) using convenience sampling at three hemodialysis centers in Ibn Sina, Saadi and Namazi hospitals. Data collection was performed during three months using questionnaire of DASS-21. Collected data were analyzed using descriptive and inferential statistics. Findings : Boys accounted for 55.6 percent of pediatric dialysis patients, while girls accounted for 44.4 percent. The sample's youngest participant was 13 years old, while the eldest was 18 years old. According to the results of Table 2, the mean score of the mental state of adolescents hospitalized in three hospitals of Ibn Sina, Namazi and Saadi was M= 42.14. Also, in their opinion, the mean score of medical spaces was M= 73.54. Conclusion : The results of this study showed that the quality of the treatment room is more effective in mitigating tension in dialysis patients aged 13-18 years admitted to the dialysis ward of Ibn Sina Hospital in Shiraz than the other two dilapidated hospitals.
