The purpose of this study was to examine the contribution of faith-based organization project support on improving the livelihood of vulnerable children in City of Kigali, Rwanda. The specific objectives were to establish contribution on healthcare support by a Christian Life Assembly (CLA) project on improving the livelihood of vulnerable children in the City of Kigali; to examine the contribution of psychosocial support by a CLA project on improving the livelihood of vulnerable children in the City of Kigali; to determine the contribution of education support by a CLA project on improving the livelihood of vulnerable children in the City of Kigali. Descriptive research design with a correlational coefficient r size effect was used with quantitative approaches. A census survey of 120 respondents comprising of caregivers, and staff of Christian Life Assembly Project was targeted. The study gathered primary data using questionnaire and interview survey. An IBM SPSS package was used for descriptive statistics in term of frequency, percentage, mean and standard deviation and inferential statistics in term of correlation and regression analysis. The findings show that females (57.5%) dominated the males (42.5%); the age range of adult persons surveyed were between 41-50 years, (49.2%), most respondents were married (48.3%). The education level, 32.5% of respondents had not gone to school, 47.5% of respondent had finished primary school and 15.8% had attended high school. These percentages and the levels of education are key pointers for standards of living, potential for earnings and the wellbeing of the respondents. The researcher found that the majority of respondent (53.3%) had been involved in CLA Project for over 12 years, (81%) of respondents had received healthcare support provided by CLA Project as a contribution on improving the livelihood of vulnerable children in City of Kigali. The findings show that healthcare support by CLA Project as a contribution on improving the livelihood of vulnerable children in the City of Kigali had been contributed. Medical insurance was at (83.3%),