摘要:The aim of the this study was to introduce the design of an expert system which was able to fully diagnoses and treat Pancreas, Thyroid and Parathyroid glands diseases; furthermore, it gave first aids in emergency cases caused by diabetes. Since, diabetes diseases are widely spreads in Gaza, we chose it to be the primary target from the endocrine diseases. Our expert system was not meant to replace the human physician but using such system may be useful in cases like overcoming the problems of the shortage in human physicians and accuracy and speed in processing facts. This system can be used to help the physician in their work. Our expert system was initially evaluated with existing classical test cases. The result of the evaluation was accurate and promising.