In many systems such as industry, aerospace and defense, electrical connectors are fundamental components, and their main failure form is contact failure. In order to improve the contact reliability of electrical connector contacts, this paper will study the contact conditions and contact fatigue life of the contact parts, and use ABAQUS software to conduct motion simulation on the insertion and withdrawal characteristics of the contact parts, and obtain the insertion and withdrawal force, contact pressure change and maximum stress distribution of the contact parts. FE-SAFE software is used to predict the contact fatigue life of the contact parts by taking the contact state of the single plug and pull simulation test as the boundary condition. Finally, based on the finite element simulation, the influence degree of the structural parameters of the jack structure on the contact performance and contact fatigue life is analyzed. The results show that the length of reed, the thickness of reed and the number of op