Heat stroke is a general term for both solar radiation and heat stroke. Sunradiopathy is caused by direct exposure of the head of a cow to intense sun shaking during the hot season. It causes brain and meningeal hyperemia and acute lesions of the brain parenchyma; heat shot is due to the hot and humid environment. In the body, heat dissipation is difficult and the body heat builds up, causing dysfunction of the central nervous system. Clinical Symptoms: Sudden onset during summer season in summer heat. Diseased cattle are depressed or excited, with conjunctival flushing, watery nasal fluids, dry mouth, dry mouth, loss of appetite, increased desire to drink, slow movement, body shaking, unsteady gait; difficulty in breathing, mouth stretching, and high breathing Up to 80 beats/min or more, alveolar breathing sounds harsh; body sweating, superficial hot, body temperature up to 42 degrees Celsius,; pulse Bo increase, up to 100 beats per minute; late high fever coma, muscle tremors, mouth foam The mucous membranes bleed and die. Prevention and control measures: During the hot season, the cattle should work in the morning and at night, have a rest at noon, and have more rest and drinking during the service; the shelters should be spacious and well-ventilated; the transportation of vehicles and boats should not be overcrowded; the cattle body should be washed frequently to keep it clean and cool. Ventilation and cool place, put the ice pack on the head, cold water pouring, cold water enema, drink cold water. The drug can be cooled by intramuscular injection of 2.5% chlorpromazine solution 10 to 20 ml, or mixed intravenously in physiological saline. When the body temperature drops to 39 degrees Celsius, cooling can be prevented to prevent collapse. To maintain cardiopulmonary function, one can first infuse cardiac stimulant, then one to two liters of venous blood, then infusion of compound sodium chloride or saline 2 to 3 liters. To correct acidosis, 500 to 100 ml of 5% sodium bicarbonate solution can be intravenously injected. Reduce intracranial pressure by intravenously infusing 20% ​​of a lotrool or 25% sorbitol 500 to 100 ml, or intravenously injecting 50% glucose 300 to 500 ml. When the sick cow is uneasy, it can be injected with 100 ml of Ambroxol injection or other sedatives.