▎ 摘　　要

NOVELTY - This new utility model relates to one of light can reverse the site effect transistor biosensor, comprising, on said substrate layer provided with metal electrode pair, the metal electrode is between two to three metal electrode provided with electric conduction passage, the electric conduction passage of graphene layer and depositing on the graphene layer on the reduction oxidation graphene/titanium dioxide compound cover layer formation, the metal electrode respectively and connected with outside signal detecting device in between two electrode. After the utility model new site effect transistor biologic sensor is for biological sample for detecting, and complete in detection, by ultraviolet light irradiation treatment so can realize repeating use; the site effect transistor biosensor and electronic detection as means, no need to mark, the sensitivity is high, it is light suitable, carry suitable, and can present microelectronics technique, is easy to realize miniaturization and integration, and has light can reverse character, can repeat use equal advantages, in clinical disease diagnosis aspect for play to the important function.