The invention provides a traditional Chinese medicine tablet with significant pain-relieving, calming, and pain-stopping effects, and a preparation method thereof. The traditional Chinese medicine sustained-release tablet comprises Kwangsi stephania root, HPMC, acrylic resin, lactose, 95% ethanol, and magnesium stearate. The tablet provided by the invention has significant pain-relieving and pain-stopping effects, no toxicity, no addictiveness, no significant adverse reaction, and durable effect. The tablet can be applied for disease pains caused by various reasons, and for relieving pain of a patient. The adopted process method is safe, stable, and economical, and has the advantages of low loss rate and high yield. According to an extraction process, macroporous absorption resin is adopted. The material adopted during the process can be recycled and regenerated. Ethanol can be recycled and reused. Energy consumption is low, and environment pollution is prevented. During tableting, acrylic resin is adopted as a framework material. The effect of the sustained-release medicine is reliable and stable, and human body bioavailability is high.