Provided is a technique to connect connectors that electrically connect coaxial cables to each other, the technique capable of reducing errors in manual work and improving work efficiency by making the work easier and simpler. Plural slots 123 each extending in an axial direction are provided in a base-end-side supporting region α of an outer conductor 12 of a contact-section portion 14. Base-end-side supporting pieces 124 deformable radially are formed by the slots. The base-end-side supporting region of the contact-section portion is attached to the inside of a supporting tubular portion 171 of a housing 17, and thereby a leading-end-side un-supported region β that is not supported by the housing is allowed to incline with respect to the axial direction.