P Picky eater is a term that is often heard in the developmental stage of children 1-3years because at this stage the child often searches for "similarity" as much aspossible, including always being on the same group of food. It has 25%prevalence of the picky eater in Jakarta. The emergence of this picky eaterbehavior is influenced by several factors, one of which is the long-time provisionof breast milk exclusively. The study aims to determine the relationship betweenthe old and exclusive feeding of the picky eater in children aged 1-3 years.METHODThe Research was conducted against 141 respodens in September – November2019 at Grogol Petamburan Puskesmas in West Jakarta. The research methodused is observational analysis with a cross-sectional study design. The researchinstruments used are the exclusive feeding questionnaire and the Children's EatingBehaviour questionnaire. Data is collected by interview and analyzed by SPSS22.0RESULTSThe prevalence of exclusive breast feeding for 6 months is 53,9%. The prevalenceof the picky eater event in children aged 1-3 years is 67.4%. The results ofanalysis of the relationship between prolonged exclusive breast feeding with theincidence of picky eater in children aged 1-3 years using the Chi-square test is pvalue = 0,000.CONCLUSIONBased on the research results there is a meaningful relationship between the lengthof exclusive breast feeding with the incidence of picky eater in children aged 1-3years.