The utility model discloses a bean grinding coffee machine structure, which comprises a base, an air exhaust unit, a stirring unit, a water tank, a filter screen, a cup body, a pressure relief and leading-out device and a control unit, and is characterized in that the air exhaust unit is arranged on the base and is provided with an air exhaust pump, an air suction pipe and an exhaust pipe; whereinthe stirring unit is arranged on the base; the water tank is arranged on the base and provided with a containing body and an upper cover, the containing body is provided with a containing groove, thecontaining groove is provided with a side wall and a bottom wall, the upper portion of the side wall is communicated with the air suction pipe, a guide-out channel is arranged below the side wall andprovided with a guide-out opening, an air inlet channel is arranged above the side wall, and the air inlet channel is provided with an air inlet. The upper cover is tightly sealed at the upper part of the accommodating body; the filter screen is arranged in the accommodating body of the water tank; the pressure relief and leading-out device is arranged at the position of the water tank and controls a leading-out opening and an air inlet of the water tank to be closed or not closed. The control unit is arranged at the position of the base and controls the air exhaust unit and the stirring unitto act; therefore, the coffee machine can grind coffee beans and improve the better extraction and brewing efficiency of coffee.