The Research Aimed to Identify the Effect of Plyometric Training with Blood Flow Restricting on Some Lung Functions, Physical Variables Variables and Time of 200m Fins Swimmer, And the Researcher Used the Experimental Approach on A Sample Of (18 A Swimmer) Divided into Two Groups (9 Swimmers for The Experimental Group And 9 For the Control Group). The research tools include: Leg Strength Endurance Test - Arm Endurance Test - Vertical Jump Test - Transition Velocity Test - Katsu Nano (Blood Flow Restriction) KAATSU NANO, Sato-Plaza, Tokyo, Japan - Spirostik Lung Function Measurement Device - Oximeter Brand SB - 200 To Measure the Oxygen Saturation of The Blood. - Training Program. Results: The Physical Abilities That Muscular Endurance Of The Legs And Arms, The And The Transitional Speed Of Fin Swimmers Develop By Integrating Plyometric Training With Blood Flow Restricting.Lung Function Is Improved In Fin Swimmers By Using Plyometric Training With Restricted Blood Flow And At Low Intensities.The Use Of Muscle Strength Training By Blood Flow Restricting And At Low Intensities Creates An Evolution In The Digital Level For Fin Swimmers.The researcher recommends: The use of blood flow restriction training as a modern training in developing muscular strength, speed and skill related variables. Keywors: Plyometric Training, Blood Flow Restricting