Jingdezhen bluish white porcelain "half-knife clay" decorative engraving technique has a long development history. As one of the typical representatives of ceramic decoration techniques, it has profound cultural heritage and artistic value. By sorting out the characteristics, application and historical evolution of Jingdezhen's bluish white porcelain "half-knife clay" decorative engraving technique, the ideological, historical, cultural and artistic values contained in it were analyzed. At the same time, combined with the compilation of field data, relevant thoughts are put forward on how to better carry out living inheritance and innovative development in the current social context.