The aim of the study was to assess the Body composition and fitness between elite and normal junior swimmers. Methods The data was collected from randomly selected (100 mal) sport healthy swimmers in Egypt in 2019.The variables consist of 22 items during three testes "Swimming, Fitness and Physiological and Anthropometrical testes". Control value for each parameter was calculated as an average value mean and standard deviation ±SD. The level used for accepting significance was *P < 0.05 and **P<0.001 Results The relative changes were calculated for each subject, an individual mean value and skewness between elite swimmers and normal swimmers for all parameters. it was a different significant for elite swimmers in most of parameters vital capacity between elite and normal junior Swimmers for elite Swimmers (P=5.07) with a Correlation for 100 m freestyle (0.4608-**), in Body Mass(P=2.82) with a Correlation (0.5726-**), in Pull up (P=1.46), with a Correlation (0.232-*).vertical jump(P=2.86**) with a Correlation (0.2675-*). available test of 4×50m /10 sec (P=5.57**) with a Correlation (0.4583**).400m Run (P=3.71**)with a Correlation (0.3275**).10:20 Swim sprint (P=3.10**)with a Correlation (0.4061**).25:50 Swim sprint (P=7.78**)with a Correlation for 100 m freestyle (0.6045**). Grab/Track Start 15 m(P=2.41*) with a Correlation (0.3222**). Core Flexibility (P=4.12**) with a Correlation (0.4343-**). Core Flexibility (P=4.12**) with a Correlation (0.4343-**). Flexibility front Foot (P=2.74**) and Agility(P=2.15*) for the elite junior swimmers. Discussion. in Total and Specific Contribution Ratio: first Sprint (S), second Lead Body Mass (LBM), Third Reaction time (RT), fourth Core Flexibility (CF), fifth vital capacity (VC), sixth Shoulder Flexibility (SF).in a correlation for the 100 m freestyle time record. Conclusions. Common assessments of Body composition and specific physical fitness in elite swimmers explain more variance in competition performance than Normal swimmers, as well as for 100 m events. These findings highlight the need to empirically assess testing regimens and suggest new tests in physical fitness and Anthropometrical characteristics