Per fect interior design of ten relys on it s nice visual effect w hich can make people enjo y the surro undings mo re fully . Interior desig n consists o f tw o part s, draw ing room design and bedro om design. The former involv es the desig n of main w all, handcraft s, cushions and so o n. A nd a feeling o f quiet , clear is preferred. T he lat ter is relat iv ely smal l and half-closed. So people inclined to make it feel w arm and relax ing through the arrangement of ceil ing , lamps, smal l decorat ion. Some adv ice o n how to g et these v isual effect s is given in this paper.