Objective To appraise the national quality of Buzhong Yiqi Wan (Keli) and analyze the inspection and ex- ploratory investigations. Methods We used legal criteria to test 262 batches of Buzhong Yiqi Wan, Shuiwan, Nong- suowan and Keli. Considering different production processes, we carried out exploratory investigations as follows: Radix Bupleuri and its analogues, Rhizoma Atractylodis Macrocephalae, Radix et Rhizoma Glycyrrhizae Pra- eparata Cure Melle , Pericarpium Cirri Reticulatae , Rhizorna Cimici f ugae , and Radix Angelicae Sinensis we...