▎ 摘　　要

NOVELTY - This utility model claims a kind of a detecting aflatoxins B1 and ochratoxin A immune sensor. The poly (p-phthalic acid diethyl ester (PET) substrate in printing conductive carbon ink made of counter electrode and a working electrode, printing silver/silver chloride ink. preparing reference electrode to obtain the double-channel silk screen printing electrode. Double-channel to obtain the silk screen printing electrode, is provided with a carboxyl group graphene layer on the working electrode, aflatoxin B1 antibody layer and ochratoxin A antibody layer to obtain the immune sensor. The sensor cost is low, the detection result is stable, the operation is convenient, suitable for measuring is fast at the same time for aflatoxin B1 and ochratoxin A.