This paper explored swimming technical issues from biomechanics and fluid mechanics perspectives, first made
analysis of swimming technical motions, successively analyzed swimming start techniques, swimming propelling
techniques and swimming turn techniques, got three motion segments technical features and biomechanics
characteristics, then analyzed hands, legs and trunk such 3 body part influence conditions with swimming propulsion
techniques in propulsion technique aspect, put forward reasonable suggestions to improve swimming propulsion
force. It focused on research of hands effect to swimming propulsion force, discussed that corresponding