The article is to analyse the swaying actions of the arm not holding the bat in the technology of push and pull in Pingpong by using the principles of biomechanics and anthropotomy,and elaborate the significance in enhancing the swaying speed of forehand and backhand which is caused by the correct swaying of the arm not holding the bat in Ping-Pong.

In this paper,the function of free hand in table tennis is studied.

On the effects of head and free arm in the stroke of tennis;

Based on the theory of "Sports Learning Process",this paper explores the notion of "racket pole-forearm angle",and further studies changing laws of chop "racket pole-forearm angle",designs a single and practical teachi.