Abstract: In order to solve the investment decision-making problem of an enterprise without sufficient capital, the principal component analysis method was used to study the multi-project assessment and selection of fund-limited projects, and the diagnostic analysis and computation of the projects were also carried out. The computed results were compared with those by traditional decision-making assessment methods, and the validity and reliability of this multi-aspect statistical analysis method were probed to provide a foundation for the multi-project investment decision-making of fund-limited enterprises.