Beijing　Manufacturing＇s　future　development　plan　is　to　develop　the　green　modern　manufacturing;　the　modern　manufacturing　industry　belongs　to　the　strong　dependence　of　external　financing　industry.　The　level　of　financial　development　in　Beijing　is　leading　the　country.　It　is　important　to　protect　the　financial　system　safety　when　the　money　market　provides　funds　to　the　modern　manufacturing.　Bank　should　put　the　environmental　assessment　into　decision-making　while　issuing　green　loans.　When　adopting　new　technology　enterprises　may　face　a　high　risk,　uncertain　operating　characteristics.　So　this　article　is　meant　to　use　the　real　option　approach　to　control　credit　risk　of　the　modern　manufacturing.　In　the　security　market,　by　adding　the　green　indicator　into　green　IPO,　green　bonds　and　other　forms　of　direct　financing　to　support　the　development　of　modern　manufacturing.　©　2011　IEEE.