A semi-automatic swing device for a swing-type portable terminal. The semi-automatic swing device includes a first member; a second member for semi-automatically performing first and second swing operations along a desired trajectory on the first member, while facing the first member; guide means having a first guide portion formed in the first member and a second guide portion spaced apart from the first guide portion, for determining a direction of the swing operations; a driving source installed in the first guide portion, for allowing the second member to semi-automatically perform the swing operations; and first and second coupling members mounted on the second member and coupled with the first and second guide portions, respectively, the first and second coupling members moving along the first and second guide members and restricting the first and second members while the first and second members face each other.