The app roach of metasynthesis from qualitative to quantitative, p roposed by Ch inese scientists from the point view of systematology, is amethod for solving comp lex giant system s like econom ic system s and their decision mak ing. The hall for work shop of metasynthetic engineering inherited from the above methodology is p roposed in 1992, w h ich statement is definitely declared. Due to the development of Inter2 net and Information Technology, the lim itation of attendees are broadened from expert’ s individual and group to the public in th is paper. The public’ s ideas are also paid attention and collected in the hall. The hall for work shop of metasynthetic engineering can be established based on Internet network and Internet technologies, w h ich is distributed th roughout theworld. Some key points ofmetasynthetic engineering are discussed in th is paper, such as human2computer cooperation, from quantitative to qualitative, discussion p rocesses, etc. W e argue that the hall forwork shop ofmetasynthetic engineering can be an informational, scientific, and democratic decision support system.