Electric connector with contact element with surface abrasion prevention function and plugging and unplugging method thereof

The invention discloses an electric connector with a contact element with a surface abrasion prevention function and a plugging and unplugging method thereof. A plating layer on the surface of a contact element of an existing electric connector is abraded in the plugging and unplugging process of the contact element. Each reed mounting hole formed in an insulator is composed of a conical hole anda cylindrical hole; a non-uniform-section slotted reed and a spring are arranged in each reed mounting hole; the inner side surfaces of two elastic sheets of each non-uniform-section slotted reed arerespectively provided with a non-uniform-section slotted reed inner plating layer; a contact pin fixed to an upper housing is provided with a contact pin outer plating layer; and the maximum size of the cross section of the contact pin outer plating layer is smaller than or equal to the minimum inner diameter of a hollow circular truncated cone shape defined by the non-uniform-section slotted reedinner plating layers on th