The invention relates to the technical field of traditional Chinese medicine production, and discloses a circulation feeding device of a traditional Chinese medicine decocting system. The circulationfeeding device comprises a feeding workbench, a feeding seesaw, a feeding conveying belt, a discharging workbench and an empty barrel conveying belt which are sequentially arranged, a discharging tankwith a downward discharging opening is arranged above the one end, facing the feeding workbench, of the feeding seesaw, a supporting plate is supported by the feeding seesaw through supporting springs, a gate plate and a gate closing spring are arranged at the discharging opening, the gate plate is connected with a gate opening push rod, a barrel pushing air cylinder is arranged on the feeding workbench, when the weight of materials in a material barrel on the supporting plate reaches a set value, the supporting springs are contracted into the material barrel and are staggered from the push rod in the up-down direction, and the feeding conveying belt is lower than the feeding seesaw. According to the circulation feeding device of the traditional Chinese medicine decocting system, the rawmaterials with the set weight can be added into an empty barrel in a feeding procedure, moreover, after the raw materials are conveyed to a subsequent procedure, the empty barrel where the raw materials are poured out in the subsequent procedure can be returned to the feeding procedure, so that a foundation for automatic production of traditional Chinese medicine decocting is laid.