The main reason of the earth global warming is $CO_2$ and the regulation about it in the whole world has been reinforced to reduce $CO_2$ emission. It is needed that we should reduce it in the process at the production of concrete generated much of $CO_2$ emission as the primary material of construction industry recognized unfriendly environment industry. Based on a concrete, this study was constructed the Assessment system of $CO_2$ emission and economical efficiency in the life cycle of concrete to evaluate $CO_2$ emission generated in the stage of material production, transportation, manufacture using optimal design techniques. This study evaluates $CO_2$ emission and economical efficiency of ready-mixed concrete according to producing companies or standards, using the proposed program in this study, which is the assessment program of $CO_2$ emission and economical efficiency in the life cycle of concrete(SUSB-CLAS). $CO_2$ emission basic unit and economical efficiency DB in various concrete types are constructed throughout this study and will be used for prediction of $CO_2$ emission and economical efficiency in concrete industry and for fundamental resource for reducing $CO_2$ emissions.