The invention discloses a chemical raw material drying device with a good drying effect. A body is included, and a heating device and a first power cover are arranged at the upper end of the body; a first rotating shaft and a first motor are arranged at the upper end of the first power cover; a second rotating shaft is arranged at the lower end of the first motor, and is provided with a first gear; a second gear is arranged on the first rotating shaft; a first gas pipe is arranged at the upper end of the first rotating shaft, and the other end of the first gas pipe is arranged on an outlet ofthe heating device; the lower end of the first rotating shaft is provided with a cross rod; the two ends of the cross rod are provided with a first gas distributing plate and a second gas distributingplate; a drying box is arranged between the first gas distributing plate and the second gas distributing plate; a third rotating shaft is arranged at the bottom of the drying box; a second power cover is arranged at the lower end of the body; a driven disk is arranged at the lower end of the third rotating shaft, and is matched with a driving disk which is arranged on a fourth rotating shaft; theother end of the fourth rotating shaft is arranged at the output end of a second motor; and the second motor is arranged on the lower portion of the second power cover.