An optical communication module comprising: a light-emitting device for converting an electric signal into an optical signal and for transmitting the optical signal, a light-receiving device for receiving an optical signal and for converting the optical signal into an electric signal, a holding section for holding the light-emitting device and the light-receiving device side by side, a receiving lens face and a transmitting lens face integrally provided on a translucent base section side by side, a pillar section integrally protruded from the base section so that the transmitting lens face is more protruded from the base section than the receiving lens face in the direction of the optical axis, and the transmitting lens face is provided at the protruded end thereof, wherein: the light-receiving device held on the holding section receives an optical signal through the receiving lens face and the base section, and the light-emitting device held on the holding section transmits an optical signal through the base section, the pillar section, and the transmitting lens face, and a light-shielding section is provided inside the base section so that the outgoing path of an optical signal from the light-emitting device is shut off from the incident path of an optical signal to the light-receiving device, characterized in that: each of the light-emitting device and the light-receiving device has a plurality of conductors (30, 30a-30d), and the light-shielding section is formed of a part of the conductors (30, 30a-30d). a light-emitting device for converting an electric signal into an optical signal and for transmitting the optical signal, a light-receiving device for receiving an optical signal and for converting the optical signal into an electric signal, a holding section for holding the light-emitting device and the light-receiving device side by side, a receiving lens face and a transmitting lens face integrally provided on a translucent base section side by side, a pillar section integrally protruded from the base section so that the transmitting lens face is more protruded from the base section than the receiving lens face in the direction of the optical axis, and the transmitting lens face is provided at the protruded end thereof, wherein: the light-receiving device held on the holding section receives an optical signal through the receiving lens face and the base section, and the light-emitting device held on the holding section transmits an optical signal through the base section, the pillar section, and the transmitting lens face, and a light-shielding section is provided inside the base section so that the outgoing path of an optical signal from the light-emitting device is shut off from the incident path of an optical signal to the light-receiving device, characterized in that: each of the light-emitting device and the light-receiving device has a plurality of conductors (30, 30a-30d), and the light-shielding section is formed of a part of the conductors (30, 30a-30d). the light-receiving device held on the holding section receives an optical signal through the receiving lens face and the base section, and the light-emitting device held on the holding section transmits an optical signal through the base section, the pillar section, and the transmitting lens face, and a light-shielding section is provided inside the base section so that the outgoing path of an optical signal from the light-emitting device is shut off from the incident path of an optical signal to the light-receiving device, characterized in that: each of the light-emitting device and the light-receiving device has a plurality of conductors (30, 30a-30d), and the light-shielding section is formed of a part of the conductors (30, 30a-30d). each of the light-emitting device and the light-receiving device has a plurality of conductors (30, 30a-30d), and the light-shielding section is formed of a part of the conductors (30, 30a-30d).