The utility model provides a photoelectric double-addressing multi-channel biochemical analyzer, which comprises a main body framework, and a light source controller, a point light source, an optical system, a plurality of testing chip units, a round horizontal turnplate, a central rotating shaft and a central controller which are arranged in the main body framework; the round horizontal turnplate can rotate around the axis of the central rotating shaft; the plurality of testing chip units are evenly distributed on the surface of the round horizontal turnplate by taking the axis of the central rotating shaft as a circular center; and the light source controller controls the point light source to emit light, the optical system is positioned below the round horizontal turnplate, and is used for receiving divergent light of the point light source and converting the received divergent light of the point light source into parallel light, and vertically irradiating the parallel light into the testing chip unit on the round horizontal turnplate. The double requirements of a photoelectric chemical type sensor on an excitation light source and electrochemical testing can be met; the addressing demand on sensitive points in an array sensor chip and the requirements on low cost, high flux and fast detection in practical application can be met.