A medicine grinder includes a first carrier, a second carrier, a base, a first moving member, and a second moving member. The first moving member is movably combined with the base. The second moving member is movably combined with the first moving member. The first carrier is supported by the base. The second moving member is utilized for pressing the second carrier, making the eatable first and second carriers having grinding function grind medicines into fragments. By using the base, the first moving member, and the second moving member, the medicines can be more conveniently grinded into fragments without damaging the first carrier and the second carrier, and the fragments of medicines can be wrapped inside the eatable first and second carriers, such that an animal cannot smell the odor of the medicines from outside of the first and second carriers, enabling the animal to eat the medicines along with the eatable first and second carriers. The improved medicine grinder facilitates to feed the animal with the fragments of medicines.一種磨藥器,包括一第一載體、一第二載體、一底座、一第一活動件及一第二活動件;第一活動件可動式結合底座;第二活動件可動式結合第一活動件;底座支撐第一載體;第二活動件壓制第二載體,使可食性且具研磨功能的第一載體及第二載體將藥磨成碎片狀;利用底座、第一活動件、第二活動件更方便且較不會損壞第一載體及第二載體,將藥磨成碎片狀,並使藥的碎片被包覆於可食性的第一載體及第二載體內,使動物由第一載體及第二載體的外部較不能嗅出藥的氣味,而連同可食性的第一載體及第二載體吃下藥,可改善已知磨藥器,方便使動物吃下藥的碎片。1...磨藥器11...第一載體110...第一環壁111...第一凸部112...第一凹部12...第二載體120...第二環壁121...第二凸部13...底座130...第一凹槽131...第一外螺紋14...第一活動件141...第一內螺紋142...第二外螺紋15...第二活動件150...第三環壁151...第二內螺紋152...第二凹槽21...第一黏結層22...藥23...第二黏結層