▎ 摘　　要

NOVELTY - This utility new type belongs to provide a one graphene field effect transistor biosensor, comprise a substrate layer set with a sense a, pad and lead, said sense a comprise at least 3 of parallel metal electrode, each of two sequentially adjacent metal electrode combination is composed of one metal electrode between for group, is at least 2 metal electrode for group, said group metal electrode for each of two metal electrode set with a graphite electric conduction channel, each strip metal electrode in a sense a of a connecting through lead with the pad, a power pad with the outside signal detection device connect. This utility new type sensor can detect a multi-sample or for the same one sample at a process multi-group parallel detection with high flux, high sensitivity, anlysis speed, small sample dosage, low cost and easy preparation of large scale.