The Prevalence Of Malnutrition Among Children Under Age Of Five In Malaysia Was Increasing, Especially For Stunted. This Case-control Study Was Designed To Determine The Factors Associated With Malnutrition Among Under Five Years Old Children In Putrajaya. This Study Was Conducted From October 2018 Until January 2019 In Putrajaya. Total Of 8261 Children Were Screened For Their Weight And Height In Pre-schools And Health Clinics To Identified Case (stunted, Wasted, Underweight And Overweight) And Control. It Involved Two Phases - Screening And Interview. Screening Was Conducted In All 118 Preschools And All Four Government Health Clinics In Putrajaya From 12 September 2018 To 12 October 2018. The Interview Phase With The Selected Participant’s Parents/ Caregivers Was Conducted From 16 October 2018 To 31 January 2019 In Their House Or Office, Their Child’s Kindergarten Or Any Other Venues At Their Convenience. Study Population Was Children Aged 6 To 59 Months Old, Malaysia Citizen, And Living In Putrajaya For At Least Six Months Were The Inclusion Criteria For This Study. The Exclusion Criteria Were Children Who Were Mentally Or Physically Disabled, Ill At The Time Of Data Collection, And Children With A Chronic Disease That Caused Them The Inability To Take Part In This Study.