This research paper aimsto study‘The relationship of Supply Chain Integration (SCI) towards Supply Chain Performance (SCP) and the direct relationship between Supply Chain Performance (SCP) and Competitive Advantage (CA)among small enterprises(SE).The researcher identified the managers of tailoring shops operating in Bangkok, Hua Hin and Pattaya in Thailand as the target samplefor this researchstudy. The researchwas carried out during 2019 on a convenience sample of 410respondents with data collected using structured questionnaires. Reliability of the questionnaire wastested using Cronbach’s Alpha test. The interrelationships proposed in the framework were tested using Structural Equation Modeling(SEM). The results showed that there is a significant positive relationship between SCI and SCP. Similarly,SCP statistically influenced CA.