An electrical connector includes an insulating body provided with a plurality of receiving holes, and a plurality of terminals respectively received in the receiving holes. Each of the terminals has a base and at least one elastic arm bent upwards and extending from the base. The elastic arm is provided with a contact portion. When the contact portion receives a force in a first stage, the elastic arm is deformed mainly due to compression, and when the contact portion continuously receives a force in a second stage, the elastic arm is deformed mainly due to bending. The normal force received by the terminal is rapidly increased in the first stage, and is reduced and maintained at the low level in the second stage.