The invention relates to a preparation device, in particular to a wolfberry pulp preparation device. The wolfberry pulp preparation device aims at achieving the technical purposes of being sufficient in filtration, good in filtration effect and high in filtration speed. To achieve the technical purposes, the wolfberry pulp preparation device comprises a base, a left frame, a grinding frame, a first rotating rod, a first belt pulley, a motor, a second rotating rod, a second belt pulley, a first flat belt, a grinding roller, a supporting rod and the like. The left side of the base is connected with the left frame in a welded mode, and the upper part of the right side of the left frame is connected with the grinding frame in a welded mode. The first rotating rod is connected to the left side of the grinding frame, and the first pulley is connected to the first rotating rod in an interference fitting mode. The grinding roller is adopted to grind wolfberry, which reduces damage of wolfberry ingredients and ensures full and fine grinding; in filtering, the device filters wolfberry pulp through two filtering defense lines.