An optoelectronic transmission module. In the optoelectronic transmission module, a light transmissive element has first and second ends and top and bottom surfaces, a circuit board transmits electrical signals and has first and second openings. The circuit board is conformably extended from the top surface of the light transmissive element to the bottom surface such that the first and second openings are aligned with the first and second ends respectively. Two light transducers, each having a light transmitter/detector optically aligned with one of the first and second ends of the light transmissive element, wherein the light transducers transmit/receive light signals through the light transmissive element and the light transmitter/detector thereof. Two electrical interconnections are disposed on the circuit board and neighbored with the two ends of the light transmissive element respectively to interconnect the electrical signals.