Xiao Chai Hu granules and Huo Xiang Zheng Qi Shui or Huo Xiang Zheng Qi Liquid can be taken together, but they need to be taken at an interval, usually in the order of Xiao Chai Hu granules first, followed by Huo Xiang Zheng Qi Liquid after an interval of 30 minutes. Because Xiao Chai Hu granules usually treat wind-heat colds, when the body is feverish or semi-obviously infected, taking Xiao Chai Hu has a significant effect of dispelling wind and heat, clearing heat and detoxifying toxins. Huo Xiang Zheng Qi Liquid can be applied to summer dampness type of cold or applied to gastrointestinal cold, both can be adjusted and regulated by applying Huo Xiang Zheng Qi, and Huo Xiang Zheng Qi also has certain effect of reducing fever. However, if patchouli and Chai Hu are combined, there will be a chemical reaction that will lead to the secondary failure of both drugs, so it is recommended that Xiao Chai Hu and Huo Xiang Zheng Qi be taken 30 minutes apart.