In Taiwan, wooden furniture industry has developed rapidly in recent years, most of them lack scientific production management and have not established the standard time.The main purpose of this study was to enhance the productivity of furniture factory through Time study and through work-sampling, it has been found out that the percentage of non-working time of labor was 45%.Through stop-watch time study. Setting up the standard time, then, design new layout by Group Technology and work-sampling, the average percentage of non-working time of labor has been improved to minus 10%.