highly effective in developing and improving the quality of the provided services .so, the present study aims to compare the satisfaction of the patients suffering from anal fissure from inpatient and outpatient treatments.Method: This cross-sectional study was conducted on 212 subjects who were selected through systematic sampling from the patients with anal fissure referring to Motahari clinic and Shahid Faghihi hospital. In order to compare the patient satisfaction in two inpatient and outpatient groups, 21-item questionnaire was designed in order to assess the patient satisfaction. Independent t-test and chi-square test were used to analyze this data.Results: satisfaction of the inpatients was significantly more than that of the outpatients (P<0.001). The inpatients’ waiting time for operation was significantly longer than that of the outpatients (P=0.029). In comparison to the inpatients, the outpatients were more satisfied with the explanations provided regarding food diets after the operation (P=0.004). Of course, outpatients had felt more stress during the operation compared to the inpatients (P=0.002). Concerning the treatment environment, the outpatients were more satisfied than the inpatients (P<0.001); however, the inpatients were more satisfied with the treatment services (P>0.001), quality, and other services compared to the outpatients (P=0.041).Conclusion: According to the advantages that mentioned, outpatient operations can be a better choice for small surgeries; of course, health planners should pay more attention to its importance and necessity and provide more equipments and welfare facilities in treatment centers.Keywords: Patient satisfaction, Fissurectomy, Inpatient, Outpatient