The utility model discloses a spherical steam distillation device of large capacity, including the water steam boiler unit, the charging devices who is used for the splendid attire distilland that areused for preparing vapor, be used for the condensing equipment with distilling off composition cooling and collecting, charging devices is including feeding ball, air duct, steam pipe, air duct upperend run through feed the ball bottom and with the ball integrated into one piece that feeds, the air duct is located the extrabulbar part long 4 of feeding 5cm, lower airway and water steam boiler unit are connected, it is provided with one and is used for feed ball and condensing equipment's distilling head of intercommunication to feed ball upper end, and the distilling head upper end is provided with the third bottle plug, run through air duct upper end lateral wall and be provided with four air vents, steam pipe upper end and air vent intercommunication, steam pipe lower extreme in the ball bottom upper end 2 of feeding the 3cm department and the inside intercommunication of ball of feeding, the utility model discloses the conduction efficiency of simple structure, vapor is higher, has avoided vapor to feed in the entering and has taken place the condensation before the ball, and distillation efficiency is showing and improves.