Japan established the Small-chamber method (JIS A1901) in 2003. This method can measure to determine the emission of volatile organic compounds and aldehydes for building products. But, Semi Volatile Organic Compounds (SVOC) cannot be measured by JIS A 1901 method because of low volatility and high boiling point. Accordingly, in 2008, the determination of the emission of semi volatile organic compounds for building products was established in Japan. On the other hand, this chemical material contained in various building products as plasticizers and flame retardants, and this material causes negative effects for the human body. According to the study of house dust in Sweden, concentration of DEHP and BBzP in house dust was associated with doctor-diagnosed rhinitis and asthma. Phthalate ester tends to adhere to house dust, measurement of concentration of Phthalate ester in house dust was needed. Specially, Korea houses were used very much polyvinyl sheet as floor products and floor heating system. Therefore, this study investigated concentration of Phthalate ester in house dusts in Korea. As a results, all investigated house dusts of Korea were higher concentration of DEHP in house dust than the 50 Percentile in Germany. Some house dusts of Korea were showed higher than the 95 Percentile in Germany.