To maintain well electric connection of a coaxial male connector and a coaxial female connector 14 even if attachment and detachment are repeated.

In a coaxial connector 12, a central conductor pin 20 is extended and contracted. If the tip of the central conductor pin 20 is brought into contact with the bottom part 28 of a central contact 22 when the coaxial connector 12 is connected to a coaxial female connector 14, a slide pin 20b is compressed while applying contact pressure to the bottom part 28 by resiliency of an inner spring of a central conductor pin main body 20a. Therefore, the tip of the slide pin 20b is brought into pressure-contact with the bottom part 28 of the central contact 22.