Abstract: A coffee grinding device includes a base, a tubular part connected to the top of the base, and a driving member received in the tubular part and driven by the base. A male grinder is connected to the driving member with a female grinder adjustably located above the male grinder. A threaded tube is threadedly connected to the tubular part and defines a gap between the underside of the threaded tube and the female grinder to adjust the sizes of coffee beans to be ground between the male and female grinders. The coffee beans are ground between the male and female grinders, and collected in the base. A cap is directly mounted to the base and receives a filter therein. The ground coffee powder is put in the filter and hot water is poured into the filter to make coffee which flows into the base.