The invention discloses a method for controlling quality of a traditional Chinese medicine preparation, which applies to test a passing plug vein preparation. The passing plug vein preparation is composed of the traditional Chinese medicines as astragalus root, campanumaea pilosula, dendrobium nobile, honeysuckle flower, achyranthes, and the like. The quality control method of the invention deletes an identification of anoelica sinensis, TLC qualitative identifications of the astragal us root, scrophularia root, licorice root, scoparone, and the astragalus root are increased further. A HPLC determination method and a content limiting regulation of glycyrrhizin acid, galuteolin, and astragaloside are also increased further. Preparation quality of the passing plug vein preparation can be further controlled thoroughly through the invention. The method of controlling quality of the traditional Chinese medicine preparation of the invention is mainly applicable to passing plug vein oral preparations as pills, granules, capsules, powder medicines, soft capsules, and dropping pills or oral liquid.