International Journal of Academic Engineering Research (IJAER)   Year: 2019 | Volume: 3 | Issue: 5 | Page No.: 1-10 Kidney Expert System Diseases and Symptoms Mohammed N. Abu Al-qumboz, Abeer A. Elsharif,Ibtesam M. Dheir, Samy S. Abu-Naser Abstract: Kidneys are an important part of the human body, both sides of the spine and above the waist. The lower ribs protect the kidneys. In the kidneys there are filtration units which are tiny units and the functions of the kidney where the excess fluid and dissolved particles are filtered and converted to urine, purification and cleaning of blood, balancing the fluids contained in the body, production of the renin enzyme, which helps control blood pressure and adjust the level Salts and other chemicals to keep the body functioning properly. In this research, we developed an expert system capable of identifying the disease that affects the kidney by identifying the symptoms that appear from the list of symptoms that appear to the doctor to avoid the user typing the symptoms wrongly. The expert system was developed using SL5 Object language and has been experimented by doctors and has given satisfactory results.