Traditional Chinese medicine patch for treating primary dysmenorrheal and preparation method of traditional Chinese medicine patch

The invention discloses a traditional Chinese medicine patch for treating primary dysmenorrheal and a preparation method of the traditional Chinese medicine patch. Active ingredients of the traditional Chinese medicine patch are prepared from the following raw materials in parts by weight: 5 to 10 parts of rhizoma cyperi, 5 to 10 parts of rhizoma corydalis, 4 to 8 parts of cassia twigs, 4 to 8 parts of cortex cinnamomi, 5 to 8 parts of radix aucklandiae and 2 to 4 parts of Chinese angelica extract liquid. The preparation method comprises the following steps: stewing the Chinese angelica in water with slow fire for 40 minutes to obtain the Chinese angelica extract liquid, wherein active medicinal ingredients contained in 1 ml of the Chinese angelica extract liquid is equivalent to that contained in 1 g of Chinese angelica; weighing the rhizome cyperi, the rhizome corydalis, the cassia twigs, the cortex cinnamomi and the radix aucklandiae, and grinding into powder; mixing the powder with 2 to 4 ml of the Chinese angelica extract liquid to form paste; and uniformly smearing the prepared medicine onto a medical adhesive tape, and then covering the medicine with nonwoven fabric, thus obtaining the traditional Chinese medicine patch. The traditional Chinese medicine patch is a pure traditional Chinese medicine preparation, has no toxicity and side effect for a patient, is low in cost, can effectively treat the primary dysmenorrheal, and is fast in effectiveness and high in cure rate.