Provided is a connection structure for a coaxial cable that makes it easy to mount a core wire of a coaxial cable to a conductive joint and connect said core wire by soldering. Conductive joints 2 are formed with a predetermined interval therebetween on a substrate 1. Solder resistor sections 5 are formed on both sides of the conductive joints 2. The core wire 41 of a coaxial cable 4 is accommodated between two solder resistor sections 5 and the core wire 41 is mounted to the upper surface 2a of a conductive joint 2. While in this state, the core wire 41 is connected to the upper surface 2a of the conductive joint 2 by a solder 3.