It is a new excipient used in pharmaceutical preparations. It is a white powder with high purity and good fluidity. It is an excellent flow promoter in the tablet production process and can greatly improve the granulation effect. It has good fluidity, increased bulk density, increased hardness of the prepared tablets, and shortened disintegration time, thereby improving drug dissolution. Since most Chinese patent medicine extracts have moist and hygroscopic properties, micronized silica gel has the properties of absorbing water and promoting flow, and is also very suitable for use in capsules and other medicines.