From January to September, the Japanese air-conditioner brand sale volume of China's household air-conditioning market is 5.78 million ,decreased 10% year-on-year;Korean brand sales is 3.9 million units,decreased 7% year-on-year; market share’s decline of Korean brand and Japanese brand   originate from extrusion of local brands. According to information,Japanese brand share’s decline is  because that China domestic share is declined,while  Korean brand share’s decline mainly from reduction of China and overseas market share.