In order to meet the needs of those who love coffee, and tea, it is very inconvenient to prepare a variety of teapots and coffee makers. Therefore, I thought that we can design a teapot shared by coffee and tea to solve the functional appeal and satisfy the psychological needs of the crowd.The design is a dual-purpose teapot. When the coffee filter is placed up, the filter paper is placed in it,used it as coffee makers. When the coffee filter is buckled down on the undulating groove at the bottom of the cup,used it as the teapot.The bottom corrugated groove is effective to prevent tea from flowing out of the filter.