ABSTRACT Background:Constipation is defined as FC if there is no underlying organic cause, what is the case in up to 95% of children. The present study was conducted to find out the bowel function, dietary habits and their association with physical and behavioral problems in children suffering from functional constipation. Material & methods:The present cross Sectional, descriptive study was conducted among 290 Children with functional constipation. In order to determine the kind of stool passed, a Bristol chart was employed.The proforma had been filled by principal investigator. SPSS statistical software was used for all statistical analyses (version 25.0). Statistical significance was defined as two-sided values of <0.05. Results:About 41.8% children were less than 5year of age group and 48.9% children were between age group 6-10years and 9.3% children belong to age group 11-14year. About 45.8% children were males and 54.2% children were females. About 37.2% children were from rural area and 62.8% children were from urban area. Maximum children (66.2%) had milk based diet. The p-value was 0.041366. About 55.8% children had inadequate water intake. The p-value was .001933. About 66.5% children played indoor games. The p-value was < .00001. About 31.7% children had bowel >2/week and 68.2% children had bowel <2/week. About 28.9% children had retentive posture. About 33.1% children had fecal incontinence and 85.5% children passed hard stool. The p-value was .046081. About 27.9% children passed Type 1 stool, 45.8% children passed Type 2 stool, 12.4% children passed Type 3 stool, 6.2% children passed Type 4 stool, 2.7% children passed Type 5 stool, 4.1% children pass type 6 stool and no children passed Type 7 stool. The p-value was < 0.00001. About (78.6%) children had recurrent abdominal pain.The p-value was .031733,and (49.6%) children had temper tantrum. The p-value was .044881. Conclusion:The present study concluded that maximum children suffering from functional constipation had milk based diet, most of the children had inadequate water intake and played indoor games, maximum children had bowel movement <2/week and passed hard stool, most of children passed Type 2 stool, maximum children had recurrent abdominal pain and temper tantrum.