The contraction and real estate business has played an important role for the national economic in these thirty years in Taiwan and it develops the relative business prosperously as well. After several high peak cycles the contraction and real estate business was treated as the high profit business but now it¡¦s not as well fortuned as the old days because of the impact of economy deflation and the over surplus of houses. According to the special localization characters and the growth of population to increase the supplied volume as usual, it remains the survivable space for the contraction enterprises. The winner will belong to the one who can be familiar with the market, to build the creative products and to execute the suitable marketing strategies. The main thesis is to discuss the marketing strategies for the contraction companies under the deflation economic environments and the research is used by the case study methodology to estimate how to use the advantages of marketing strategies to develop the contraction and the real estate business via interviewing the famous six companies in the southern area of Taiwan. The researches uses the SWOT analysis methodology to survey the main helpful elements such as the bosses are able to run his company by the strength ability, to improve his weakness, to grasp the opportunities fully, and to overcome the threat of the surroundings. The researcher uses the 4Ps elements, such as product, place, price and promotion to elements to analysis how to execute the marketing strategies effectively and efficiently. Under the marketing oriented, the thesis concludes how to define and mark the target market properly. The researcher, who is the owner of one of the contraction enterprises, really hopes to do the research to do something for the practical and learning science fields.