A new enzyme electrode was developed by co-mobilization of chicken small intestinal tissue and ferrocene in a carbon paste for the determination of hydrogen peroxide, and its electrochemical properties are evaluated. The electrode showed the response time(t100%) as short as 3 set, the detection limit of 5.0${ imes}$10-5 M,and a good selectivity for the possible interferents tested. The electrode also offered a good linearity in calibration, a higher biocatalytic stability and a larger responding signal as compared with the other animal or plant tissue based sensors.