The purpose of this study was to analyze utilization ways and planning characteristics common spaces in commercial Mmlti-complexes in Korea. Five examples were selected from domestic commercial multi-complexes, representing unique ways of public space planning, completed after 2000 (Lafesta completed in 2003, I park mall completed in 2005, Western dome completed in 2007, The city7 completed in 2009, Time square completed in 2009). The study was processed in this way. Firstly, functional organization of examples are analyzed in a view of relationship between common and exclusive spaces including compositional ratios of facilities and ratios of those spaces. And individual common spaces are analyzed based on open spaces and circulation systems. The results of this study were as follows: First one is invigorating ways of linking inner and outer common Inner and outer common spaces were linked actively visually as well as physically and boundaries among them were continuously disappeared. Second one is multi-functional common spaces. In the way of common space planning, multi-functional public spaces were introduced and planned in various ways. With that, the synergic effects from the integration could be one of the revitalizing ways in facilities. Common spaces are no longer no-purpose spaces decreasing profits of commercial facilities, which are able to invigorate exclusive spaces with improving and evolving methods ways of planning.