Fear of cold in boys may be caused by kidney deficiency, but it may also be caused by other reasons, such as cold. Fear of cold is one of the main manifestations of yang deficiency, due to prolonged illness and injury to yang, or further development of qi deficiency, or living in a cold place for a long time, or overdose of bitter, cold and cool products, depletion of yang qi, and so on. Yang deficiency can be seen in different organs of the lesions, clinical common heart Yang deficiency, spleen Yang deficiency, kidney Yang deficiency, stomach Yang deficiency. Boys are afraid of cold if caused by kidney yang deficiency, also accompanied by lumbar and knee soreness and weakness (lumbar and knee soreness and weakness) cold pain, white or sallow face, loss of libido, fatigue (mental exhaustion, physical weakness), nocturnal urination, urinary frequency, clear and long, and so on. In addition to kidney yang deficiency, fear of cold can also be seen in spleen yang deficiency, heart yang deficiency, etc., as well as cold and flu can appear fear of cold and other uncomfortable symptoms. Patients should go to a regular hospital in time, under the guidance of a professional physician to avoid delaying the condition.