The pathologic cause of cold without sweating in the heat of the day is considered to be mostly a deficiency of yang. According to Chinese medicine, “Yang deficiency is external cold”. Yang deficiency generally refers to the lack of yang qi in the body, the performance of the fear of cold, thirst, fear of cold, loose stools, shortness of breath and so on. Summer weather is hot, in order to dissipate heat, the human body external heat and internal cold, and Yang deficiency of the crowd often four seasons for the cold limbs as the main manifestation, so the “Yang deficiency”, is the heat of the day does not sweat the cold reason. If you are not sweating and are afraid of cold, you can use Jin Gui Ren Qi Pills plus or minus to treat the deficiency of kidney yang, and Li Zhong Wan plus or minus to treat the deficiency of spleen yang. It should be noted that Jin Gui Kidney Qi Pills should not be taken by pregnant women. The adverse reactions or contraindications of Lizhong Pills are not clear. In addition, the patient should pay attention to keep warm in daily life, do some exercise, and use moxibustion under the guidance of a professional Chinese medicine practitioner for treatment. If you are not feeling well, you should go to a regular hospital in time, and if you need to take medication, you should follow the doctor’s instructions.