The invention discloses a traditional Chinese medicine composition for treating epidemic mump. The traditional Chinese medicine composition comprises the following raw materials by weight ratio: 13-19 parts of isatis root, 9-15 parts of fructus forsythia, 6-12 parts of arctium fruit, 6-12 parts of Scutellaria baicalensis, 9-15 parts of Prunella vulgaris, 6-12 parts of honeysuckle flower, 4-8 parts of radix bupleuri, 6-12 parts of mint, 6-12 parts of Cimicifuga foetida, 4-8 parts of balloonflower root, 4-8 parts of licorice, and 4-8 parts of anemarrhena. The traditional Chinese medicine composition selects 12 types of natural traditional Chinese medicines for compatibility, the synergism of the raw materials has the functions of clearing heat and calming liver, rectifying qi and activating blood, detoxifying and eliminating blood stasis, relaxing vein and dissipating heat, and diminishing swelling and relieving pain, simultaneous treatment of principal and subordinate symptoms is achieved, the traditional Chinese medicine composition has good effect for treating epidemic mump, and has no toxic and side effects. The preparation method has the advantages of simple process, short treatment course, and convenient administration, and the effective rate can reach more than 80%.