Abstract: A joy stick includes a base, and a post having a lower portion extending through a retainer which is rotatable about the base. A spring is biased between the post and the retainer, and another spring is biased between the base and the post so that the post is biased upward relative to the retainer and the base. Four switches have blades disposed beside the lower portion of the post. The blades can be depressed by the lower portion of the post. When the post is depressed, the depression force on the post can be balanced by the springs so that the joy stick will not be worn out very quick and can endure longer.