“Infrastructure Cost-Benefit Analysis and Financial Plan Manual” is an important guidance paper to evaluate infrastructure's economic and financial plan. The manual has been completed for more than ten years; thus, there is the need to renew the content. After examining infrastructure assessment manuals and Cost- Benefit Analysis reports of Infrastructure sectors from several countries, our team give out our suggestions, including the criteria of direct and indirect benefits, the clarification and example of economic benefit analysis, the solution to spillover effect and land value-added effect, the standard to discount rate, the comparison between old and new method to calculate self-liquidating ratio, and the introduction of scenario analysis by EXCEL, to increase the practicality of manual and to solve the economic benefit double-counting issue.
