Long-term high temperature work will lead to human body water electrolyte disorders, heat stroke, cardiovascular system diseases, etc., need to be specifically analyzed. 1. Water-electrolyte disorders: Long-term high-temperature work and large amount of sweating will lead to large amount of water and electrolyte (such as sodium, potassium, etc.) loss, so there will be dehydration, hyponatremia, hypokalemia and other water-electrolyte disorders. 2. Heatstroke: Long-term high temperature work leads to increased heat production and heat dissipation obstacles, easily leading to heatstroke. Aura of heat stroke can appear sweating, dizziness, inattention and other symptoms, mild heat stroke can appear flushing, blood pressure drop and other performance, severe heat stroke can be manifested as heat cramps, pyrexia or heat exhaustion. 3. Cardiovascular system diseases: long-term high temperature work, the body metabolism faster, will lead to increased heart rate, myocardial oxygen consumption increases, while high temperature caused by dehydration will lead to increased blood viscosity, so angina pectoris, infarction risk will increase; Secondly, long-term high temperature work electrolyte disorders (such as low-sodium, low-potassium, etc.), can cause cardiac arrhythmia and other diseases. Prolonged high temperature work is bad for the human body, if discomfort occurs, it is recommended to consult a doctor in time to avoid delaying the condition.