Preparation equipment and preparation method of cold extraction coffee

The invention belongs to the technical field of preparation of cold extraction coffee, and particularly relates to preparation equipment and a preparation method of cold extraction coffee. The preparation equipment comprises a shell, a motor, a temperature controller, a material taking door, a baking unit and a controller; the controller controls the baking unit; the top of the shell is in an arc shape, and a discharging opening is formed in the middle of the top of the shell; the temperature controller is fixedly connected to one side of the arc-shaped surface of the shell, and the motor is fixedly connected to one side, adjacent to the arc-shaped surface, of the shell; and a roller is arranged at the position, close to the top, in the shell, the arc-shaped outer surface of the roller corresponds to the arc-shaped inner wall of the top of the shell. The roller is matched with the through hole, the motor drives the roller to rotate, the roller drives coffee beans to roll on the arc-shaped inner wall of the ro