The invention belongs to the technical field of pharmacy, and particularly discloses a gynecological leucorrhea arresting sustained release tablet and a preparation method thereof. The gynecological leucorrhea arresting sustained release tablet is composed of main drugs and pharmaceutic adjuvants, the main drugs are composed of cortex ailanthi, cortex phellodendri, Chinese yam, poria cocos, tortoise shells, donkey-hide gelatin and schisandra chinensis, and the pharmaceutic adjuvants comprise a surfactant, an adhesive, a lubricant and a filler. The medicine is prepared into the sustained-release preparation, the action time of the medicine in the body can be effectively prolonged, the medicine taking dosage and frequency of a patient are reduced, meanwhile, stains on the surfaces of the raw materials can be comprehensively removed by classifying and screening the raw materials and comprehensively cleaning and dipping the raw materials, and the cleanliness of the surfaces of traditional Chinese medicine is improved; the traditional Chinese medicinal materials are effectively extracted in the extraction process, the content of effective components of the medicine is reserved, the purity of the effective components of the medicine is kept, and the medicinal value and quality of the prepared gynecological leucorrhea stopping sustained release tablet are further improved.