Huo Xiang Zheng Qi Shui can be applied to the navel, but for the treatment of diseases such as fever, it is basically useless. Huo Xiang Zheng Qi Shui is a proprietary Chinese medicine with ingredients such as Atractylodes macrocephala, Angelica dahurica, Radix et Rhizoma, and ethanol, which can be useful for patients with heatstroke or cold and fever when taken orally, but is not effective when used externally. If the patient has a fever or body discomfort, you need to go to the hospital first to check the cause, otherwise self-medication may be incorrect, or even wrong medication, resulting in aggravation of the disease, and if the patient uses cephalosporin antibiotics or metronidazole antibiotics, you can not use Huo Xiang Zheng Qi Shui, because the ethanol in it will produce a disulfiram-like reaction with the drug, which will lead to respiratory edema, abnormal heart function, and in serious cases It can lead to respiratory edema, abnormal heart function, and even life-threatening respiratory difficulties.