The utility model relates to a segregation preventing device of a cement stabilized soil mixing station and specifically relates to a throwing segregation preventing device of a cement stabilized soil mixing station. The throwing segregation preventing device is characterized in that a twin-screw regulating mechanism is arranged between a striker plate and a support rod, and the included angle between the striker plate and the vertical direction can be changed continuously within a certain range by changing the length of the screw mechanism; two screw devices are rotated so that a striker plate combined mechanism moves horizontally as a whole. According to actual throwing condition, the angle of the striker plate and the horizontal distance between the striker plate and a throwing site are adjusted so that materials fall vertically after colliding with the striker plate, and therefore, the throwing segregation prevention action is achieved.