The government didn’t stipulate the relevant regulations of management towards building interior design and decoration construction before 1996; those designers privately tore down or covered the firefighting system without using burning resistance or flameproof material for the purpose of beauty and in consideration of constructor’s cost, so that major injuries were resulted from many fire disasters in the year of 1991. Therefore, Ministry of the Interior amended Paragraph 4 of Article 77-2 of “Construction Act” as law basis to formulate “Interior Decoration Examination Code” on May 29, 1996, which incorporated interior decoration construction and repairing practitioners into the government construction management system. After the promulgation of “Interior Decoration Examination Code”, “Training course for interior decoration professional design and construction technical personnel” was then held accordingly. Ministry of Labor has officially been commissioned by the government to deal with national technician examination relating to interior decoration construction and repairing since 2004. Any building interior design practitioner must pass “Building interior design” class B technician proficiency test handled by Ministry of Labor and participate in “Training course for interior decoration construction and repairing” before registering as an “interior decoration professional design and construction technical personnel”. According to Interior Decoration Examination Code, any one who engages in interior decoration design business has more than one professional design and technical personnel each should indicate the name of interior decoration when filing application for company or commercial registration; any failure to obtain registration certificate after applying to Ministry of the Interior for the registration license for interior decoration construction and repairing shall not perform design business for interior decoration. This study used the mode of literature review and questionnaire analysis for the research. Hope to explore the current systems relating to building interior design class B technician through this study, drawing up the relevant systems and problem improved countermeasures on the basis of research results, and finally giving law revision suggestions, so that the government can take for future reference when amending the related laws.