Objective To explore the effective ingredients of traditional Chinese medicine compound in different aperture dynamic migration patterns in the process of ceramic membrane microfiltration, compare its micro filtration flux and solid inclusion removal rate by taking Compound Banlangen Liyan Granules (Radix Isatidis, Radix Scrophulariae, Radix Platycodi, Radix Glycyrrhizae, etc.) water extraction liquid as the research object.