Hot and dry hands and feet in summer may be a normal phenomenon caused by hot weather, or it may be caused by yin deficiency and fire (yin fluid insufficiency leading to fire), kidney deficiency and other diseases. 1. Hot weather: summer time temperatures are high, hot weather, will lead to patients with the phenomenon of hot hands and feet, if the rest in the shade can be relieved is a normal physiological phenomenon. 2. Yin deficiency and fire: Yin deficiency and fire is mainly due to the lack of blood, Yin fluid injury and other factors, the patient is mainly manifested as five heart heat (two hearts and two feet heart heat, and consciously heart and chest heat), hands and feet and heart heat and dry mouth and throat, night sweating (sleep sweating abnormal, wake up sweating to stop), etc., which will lead to the patient to appear in the summer of the phenomenon of hot and dry hands and feet. 3. Kidney deficiency: Kidney deficiency is mainly due to kidney injury, blood loss, fluid depletion, etc., patients will appear back pain, fatigue (mental weakness), five heartburn, hot flashes, spermatorrhea, premature ejaculation, amenorrhea, infertility and other symptoms, as well as mental weakness and other symptoms, which will also lead to the patient has the performance of the summer hands and feet hot and dry. When the patient has the phenomenon of hot and dry hands and feet in summer, it may be caused by the hot weather and does not need treatment. If it is caused by a disease, patients are advised to seek medical treatment in time.