The heat of the day is weak, may be a deficiency of gas or external summer causes. 1. qi deficiency: qi deficiency refers to the lack of vital energy, viscera function activities, mostly due to prolonged illness, overwork, congenital insufficiency, old age and frailty and other reasons, can be manifested as fatigue (mental exhaustion, physical weakness), self-sweating (involuntary sweating during the day, sweating aggravates the slightest movement), dizziness and dizziness, lack of breath and laziness (lack of strength, do not want to talk) and other symptoms. 2. Exogenous heat: mostly due to the hot weather, summer heat or summer dampness attacking the human body, clinically manifested as shortness of breath and fatigue, thirst and drink, fever and cold (fear of cold), sweating, sleepy limbs and other signs and symptoms of manifestations. There is a difference between heatstroke and heatstroke, with heatstroke being lighter and heatstroke being heavier. When the patient’s body fatigue is difficult to relieve the heat of the day, he or she should consult a doctor for diagnosis and treatment in a timely manner so as not to delay his or her condition.