Biological photoelectrode capable of improving light-emitting angle through micro lens and preparation method of biological photoelectrode

The invention relates to the technical field of biological electrodes, and particularly discloses a biological photoelectrode capable of improving a light emitting angle through a micro lens and a preparation method of the biological photoelectrode. The biological photoelectrode comprises a main body with a light emitting diode, the light emitting diode, a microelectrode and an insulating layer; the insulating layer covers the light emitting diode; a lens structure is arranged at a position on the insulating layer corresponding to the light-emitting diode; the lens structure is a convex lens structure or a concave lens structure. According to the biological photoelectrode provided by the invention, the lens structure is arranged on the insulating layer, so that the function of changing the light angle is added to the insulating layer with a single function originally, and the insulating layer is made of a material in an original process line, so that original production steps can be better fused, the producti