Technological and socio-economic developments have changed traditional consumption patterns to western consumption patterns such as fast food contains high energy and fat. Based on Riskesdas (2013) the prevalence of obesity is quite high 18,8%. The purpose this research is to know the relation of knowledge and fast food consumption pattern with nutrition status in elementary school child in Sanur Kaja area. This research type is observational andcrossectional design with 76 samples. Data of knowledge collected by angket method, data of fast food consumption pattern collected by interview method using SQ-FFQ, and nutrition status data based on indicator body mass index (IMT/U) collected by anthropometry method. Data analysis use pearson correlationstatistics. The result of this research showed that 39 (51,3%) samples are knowledge enough, consumption patters of fast food samples both of type, consumption of energi, fat and frecuency more than average, type consumption fast food 47 (61,8%) sample, consumption energy of fast food 42 (55,3%) sample, consumption fat of fast food 40 (52,6%) sample and frequency of fast food consumption 46 (60,5%) sample. The normal nutrition status as much 53 (69,7%) sample, overweight 10 (13,2%) sample, obesity 11 (14,5%) sample, very lean 1 (1,3%) sample and lean 1 (1,3%) samples. Knowledge with fast food consumption pattern and type consumption of fast food with nutrition status there is no significant relationship (p>0,05), fast food consumption pattern which include consumption of energy, consumption of fat and frequency of fast food consumption significant relationship with nutrition status (p <0.05).