Abstract: The moment you discover which foot is your right foot, you don’t have many hesitations about which of them is the left foot. And then the problem left is which of them to start walking with them (A.A.Milne). Flatfoot impairs the body’s shock absorption mechanism and creates motor difficulties in functions or activities requiring balance and stability. The purpose of this study was to find the effect of flat foot deformity on selected physical fitness components in school going child. For this task a total of 20 subjects (10 flat footer and 10 normal feets) subject were selected purposively from different school, ranged from 9 to 14 years of age. Methodology –to identify the flat foot deformities wet test was measured. Data was collected individually by performing the wet test. Mean score, standard deviation were applied for data analysis and interpretation. Conclusion – the mean score for bow legs was 3.6 and for knock knee 4.4 was reported. In the examined subject it was found that 20% of the subjects were having postural deformity.