The invention provides a traditional Chinese medicine gastrointestinal auxiliary for type-B ultrasonic and a preparation method thereof, and the traditional Chinese medicine comprises the following raw medicinal materials: cumin, galangal, rhizome cyperi, three-nerved spicebush roots, cuttlebone, green tangerine peels, medicated leaven, malts, immature bitter orange, rheum officinale, mirabilite, cortex magnoliae officinalis, radix aucklandiae, amomum, agastache rugosa, finger citron, hawthorns, radish seeds, calcined concha arcae, evodia, pinellia ternate, semen arecae, atractylodes macrocephala koidz, rhizoma nardostachyos and fritillary bulb. The traditional Chinese medicine gastrointestinal auxiliary for type-B ultrasonic has the beneficial effects of being safe to use, painless, noninvasive, non-toxic, free from anaphylactic reaction, short in examination time, high in development rate, convenient to use and low in cost, providing a new technology and a new method for corrective early-stage diagnosis of diseases, and powerful basis for clinical diagnosis, and being a desirable novel auxiliary. Furthermore, the preparation process is simple and practical.