An optical identification module device has a light pipe integrally formed with transparent material, a lens holder, a lens, a sensing circuit board and a light emitting diode. A light source container and a guiding recess are arranged on one side of the light pipe. A first light channel is defined in the light pipe. An engaging bump and a separating bump aligned with the engaging bump are arranged on one side of the lens holder. The engaging bump engages with the guiding recess. A second light channel corresponding to the first light channel is defined in the lens holder, and the lens is arranged in the second light channel. The sensing circuit board with a receiver soldered at a position corresponding to the second light channel is arranged at the bottom of the lens holder. The light emitting diode is placed in the light source container.