The invention discloses a warm compression thermal therapy liquid for treating rheumatoid arthritis, postpartum rheumatism, scapulohumeral periarthritis, lumbar muscle degeneration, sciatica, lumbar vertebra pain, cervical vertebra pain, hemiplegia and stroke. The warm compression thermal therapy liquid is mainly prepared from double-teeth pubescent angelica root, wild ginger, himalayan teasel root, dandelion, longhairy antenoron herb, fortune's drynaria rhizome, Chinese taxillus twig, astragalus, cortex eucommiae, scorpio, red paeony root, white paeony root, orientvine, prepared rehmannia rhizome, achyranthis bidentatae, large-leaved gentian and red-rooted salvia root according to a certain weight proportion. A preparation method of the warm compression thermal therapy liquid comprises the following steps of: preparing the selected Chinese medicines, extracting, purifying and smashing with a smasher; and applying according to three kinds of methods. The warm compression thermal therapy liquid has the effects of clearing and activating the channels and collaterals, regulating tendons and qi, dispelling cold and drawing poison out, can be used for quickly improving microcirculation and enhancing the immunologic function and temperature resistance of an organism, is applied to treatment of a plurality of incurable miscellaneous diseases such as rheumatoid arthritis, scapulohumeral periarthritis, postpartum rheumatism, sciatica, cervical vertebra lumbar vertebra pain, hemiplegia and stroke and the like, and has quick response and a high curative rate.