The equipment is suitable for Chinese Traditional Medicine, foodstuff and chemical industry. It can be applied to following process: normal pressure or compression drug-decoting warm water soak, heat return, coercive circulation infiltration, aromatic oil extrafting and organic solvent recovery etc. Best extracting effect, short extracting time and high content of extracting liquid. The agitator can be screw of blade type. Made by high quality stainless steel can meet the GMP certification needs. It can be used in pharmaceutical, food-stuff, chemical industry etc.