A pipe press-fit connecting apparatus, comprising: a pressing power providing unit comprising a cylinder body, a cylinder rod having one end coupled to the cylinder body to move back and forth, and a cylinder block having one end coupled to the cylinder body and formed with a guide slit for guiding a movement of the cylinder rod and an installation hole formed near another end and extending in a direction perpendicular to a movement path of the cylinder rod; a connected unit having a coupling piece being inserted into the guide slit of the pressing power providing unit and formed with an insertion hole communicating with the installation hole; and a connecting device configured to align the installation hole of the pressing power providing unit and the insertion hole of the connected unit and couple the connected unit to the pressing power providing unit, wherein the connecting device comprises: a fastener installed at one end of the installation hole on an exterior surface of the cylinder block and having a fastening pin configured to be resiliently arranged and at least partially be exposed to the installation hole; and a coupling pin inserted through the installation hole and the insertion hole through another end of the installation hole on the exterior surface of the cylinder block to be resiliently coupled to the fastening pin to couple the connected unit to the pressing power providing unit, wherein the fastener comprises: a fastener body installed at one end of the installation hole on the exterior surface of the cylinder block and configured to guide a movement of the fastening pin; and the fastening pin resiliently installed in the fastener body and exposed at least partially to the installation hole, wherein the fastening pin is divided into a plurality of pins, resiliently coupled to the coupling pin inserted through the installation hole, and detached from the coupling pin by an external force. a pressing power providing unit comprising a cylinder body, a cylinder rod having one end coupled to the cylinder body to move back and forth, and a cylinder block having one end coupled to the cylinder body and formed with a guide slit for guiding a movement of the cylinder rod and an installation hole formed near another end and extending in a direction perpendicular to a movement path of the cylinder rod; a connected unit having a coupling piece being inserted into the guide slit of the pressing power providing unit and formed with an insertion hole communicating with the installation hole; and a connecting device configured to align the installation hole of the pressing power providing unit and the insertion hole of the connected unit and couple the connected unit to the pressing power providing unit, wherein the connecting device comprises: a fastener installed at one end of the installation hole on an exterior surface of the cylinder block and having a fastening pin configured to be resiliently arranged and at least partially be exposed to the installation hole; and a coupling pin inserted through the installation hole and the insertion hole through another end of the installation hole on the exterior surface of the cylinder block to be resiliently coupled to the fastening pin to couple the connected unit to the pressing power providing unit, wherein the fastener comprises: a fastener body installed at one end of the installation hole on the exterior surface of the cylinder block and configured to guide a movement of the fastening pin; and the fastening pin resiliently installed in the fastener body and exposed at least partially to the installation hole, wherein the fastening pin is divided into a plurality of pins, resiliently coupled to the coupling pin inserted through the installation hole, and detached from the coupling pin by an external force. a fastener installed at one end of the installation hole on an exterior surface of the cylinder block and having a fastening pin configured to be resiliently arranged and at least partially be exposed to the installation hole; and a coupling pin inserted through the installation hole and the insertion hole through another end of the installation hole on the exterior surface of the cylinder block to be resiliently coupled to the fastening pin to couple the connected unit to the pressing power providing unit, wherein the fastener comprises: a fastener body installed at one end of the installation hole on the exterior surface of the cylinder block and configured to guide a movement of the fastening pin; and the fastening pin resiliently installed in the fastener body and exposed at least partially to the installation hole, wherein the fastening pin is divided into a plurality of pins, resiliently coupled to the coupling pin inserted through the installation hole, and detached from the coupling pin by an external force. a fastener body installed at one end of the installation hole on the exterior surface of the cylinder block and configured to guide a movement of the fastening pin; and the fastening pin resiliently installed in the fastener body and exposed at least partially to the installation hole, wherein