This is a teaching drawing of interior decoration design for a 2-bedroom, 2-hall, 1-kitchen, 1-bathroom residence (a full set of 20 drawings). The drawing includes the catalog, legend, general design description, indoor function division drawing, decoration plan, ceiling, water and electricity, furniture and other representative decoration drawings. In combination with project examples, it indicates the content to be expressed in each drawing. It is the interior decoration engineering design depositor who knows about decoration