Balance is the ability to maintain a stable body position that resists forces (gravity, inertia) as a continuous process of detection of spatial understanding of body position (proprioception) and selecting the appropriate responders body (activation of muscle stabilizers). Postural balance, both unilaterally and bilaterally, greatly contributes to the efficient execution of movement structures in sport whether it is cyclic or complex content, with or without props. In addition to the complex nerve – muscle system, which largely contributes to the manifestation of better equilibrium characteristics of the postural balance of the body has a major influence the composition and structure of the body. The aim of the research is to determine the relationship between parameters of body composition and bilateral balance. The study was conducted on a sample of 23 active athletes, high competitive level, age 19-25., height 176 -198 cm and weight 62-98 kg. Bilateral postural balance was measured Biodex Balance System (BBS) standardized procedure, and expressed by the coefficient of overall stability (OSI). Body composition was determined using a Tanita system based on electrical bioimpedance strictly established protocol. Connections are established using the software package SPSS 22.0 and applying bivariate correlation analysis. Set body composition variables have an influence on postural balance. It was found that in this group of athletes extremely negative impact on the statistically significant level (r> 0.7, p <0, 01), the overall postural balance with variable amount and percentage of body fat in the body. Positive influence on postural balance (r <-0.7, p <0.01) showed a variable percentage of muscle tissue and the percentage of bone tissue within the body. Athletes with the percentage of body fat above 8% grouped worse postural balance. From the standpoint of procedures and systems of measurement, the results are completely valid and impose the importance of body composition in sports dominated balance as fine motor skills.