This paper aims to find the production background and characteristics of technical porcelain of Joseon dynasty. The main objective of the study is blue and white water dropper decorated with open work of dragon and cloud design and white porcelain siphoned cup of 19 th century. Primarily surveying the documents and production technique of both porcelains addresses the way in which principle of siphon was adapted to porcelains and the example of using the term. Some Goryo Celadon and Joseon Porcelain with same technique made it possible to classify the types. This paper explains the technique was originated from Chinese ceramics, especially siphoned ewer and cup of Song Dynasty to Qing Dynasty. By illuminating the records of Northern School and Joseon royals, this paper assumed the production of technical porcelain of Joseon Dynasty was activated by the inflow of Chinese ceramics and copying Chinese ceramics since 18 th century. And the style of Joseon siphoned cup showed the tastes of the Joseon consumers while the production technique was similar to the Chinese example.