Measuring method using the measuring device and which for biosensors

To provide a measurement apparatus and a measurement method for biosensor easily can be measured accurately in a short time a specific component in a sample without being influenced by the physical properties of the sample. For biosensor measuring device according to the present invention uses a biosensor comprising a sample supply port and the electrode system comprising a measuring electrode and a counter electrode, and a light can be irradiated to the sample at least a portion region of the sample supply path, the detecting an electrical change and optical change of the sample, it is possible to correct the measured values ​​to determine the physical factors of the sample.