▎ 摘　　要

NOVELTY - The method involves preparing (S110) an ion-sensitive film preparation solution for preparing an ion-sensitive film preparation solution and preparing (S120) an ion-sensitive mixed layer preparation solution by mixing the ion-sensitive film preparation solution and graphene powder to prepare an ion-sensitive mixed layer preparation solution. A space is filled between the source electrode and the drain electrode that are spaced apart from each other. The ion-sensitive mixed layer preparation solution is applied so as to cover portion of the upper portion of the source electrode and the drain electrode to provide an ion-sensitive mixed layer that responds to target ions and ion-sensitive mixed layer is prepared (S130). USE - Method for manufacturing ion detection sensor (claimed) for detecting ion such as potassium ion, calcium ion, chloride ion and sodium ion for maintaining normal functions of human body, such as transmitting nerve impulses and regulating concentration of ions in blood and cells. ADVANTAGE - The manufacturing process is simplified and the manufacturing cost is reduced. The detection sensitivity, detection limit, and selectivity for specific ions are improved. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for an ion detection sensor. DESCRIPTION OF DRAWING(S) - The drawing shows a flow diagram illustrating the process for manufacturing ion detection sensor. (Drawing includes non-English language text) Step for preparing an ion-sensitive film preparation solution for preparing an ion-sensitive film preparation solution (S110) Step for providing ion-sensitive material (S111) Step for preparing an ion-sensitive mixed layer preparation solution (S120) Step for preparing ion-sensitive mixed layer (S130) Step for providing encapsulation portion (S150)