Background: Despite unfavorable perceptions of Electro Convulsive Therapy (ECT) stemming from lack of knowledge, ECT has been one of the most significant therapeutic options for treating patients with serious mental problems since the early 20^th century. Aim: the current study aimed to assess psychiatric patients' satisfaction with electroconvulsive therapy and its relation to their knowledge and attitude. Research design: A descriptive correlational research design was utilized. Sample: A purposeful sample consisted of ninety two inpatient psychiatric patients. Setting: This research was carried out in the hospital of Minia psychiatric health and addiction treatment. Tools: Three tools were utilized; Personal and clinical data questionnaire, Patient Satisfaction Survey (PSS) also ECT Knowledge and Attitude questionnaires. Results: The present study showed that about fifty percent of the studied sample has a moderate level of satisfaction while two thirds of them have fair level of knowledge about ECT also; three-quarters of them have neutral attitude toward ECT and their attitude with high statistical significance. Conclusion:  The present study showed that, a positive correlation was present between patients' satisfaction with ECT and their attitudes toward it, and, between knowledge of patients regarding ECT as well as their attitudes toward it with a high statistical significance.