Abstract: In order to adapt to the mixed land use development trend in domestic big cities ,two key parts of suita-bility and demand analysis in shared parking allocation method are discussed .The research shows that ,the shared parking allocation measure for a single mixed land use block is suited in the core area of the first class parking zone and area of other classes in the parking space allocation standard for architectures ,while the shared parking allocation measure for mixed land use blocks is adaptive for the core area of every class parking zones .The analysis models and steps are ad-vanced for the total parking space demand calculation of mixed land use development when shared parking allocation meas-ure is taken ,in which the calculation of analysis period and dynamic parking space demand ratio is clarified .The whole method advanced is applied in the mixed developing blocks in the planned developed area of Jiangning District in Nanjing . It is found out that the total parking space demand ratio can be reduced by 25 .7% .